I too had many questions on all the different abbreviations that pertain to towing, hauling, tongue weight, etc. As a member (moderator) of an F150 site and Mustang site (hi Janet!), I decided to search this all out. I currently own a Ford Ranger 4x4 as my TV. I found by using good old Google, a Ford site that had documents for my year Ranger, and even included a work sheet to subtract options from the total weight the truck could pull; things like wheel packages, side steps, trucks total dry weight, etc, were provided in this work sheet in the form of their weight, and you added all this up, subtracted it from the GVWR (gross vehicle weight rating). That left you with what your truck could pull, based on it's frame, cab, and engine.
I was a bit shocked to find that my 2000 Ranger 4x4 was rated at 7000 pounds GVWR! Once I subtracted the trucks weight (mine is the extended cab), I was at the 3900 pound weight left for towing. After subtracting passenger weight, and any camping supplies, I figured in at 3400, enough to pull my Jayco hybrid.
This work sheet also provide the tongue weight with a proper 2 inch hitch.
If you search google on "2010 Ford XLT Towing capacity", you will come to a link (eventually) that will have these PDF documents put out by Ford. Here's a start for your truck:
Asking your dealer may be of some help, but if they are like my local ones, they basically just stare at you like deers looking into headlights.