Move from BB in $10 Stars tourney. Down to 3 tables. Call or Fold?

[Toddy]

Ive been wondering about this hand for a couple days now and need advice for the next time this happens. Down to 20 people in the Stars $10 tourney. I have 35K in chips and the blinds are 6-12K. Im the BB. So after the BB and Ante I have about 22k. Folds around to table to extremely loose player in SB. He goes all in w/ 50K in chips. I have 5-7 suited. I thought about it for awhile and figured he had 2 overcards so I called. He had K10, and I sucked out with a gutshot straight on the river. He screamed at me for calling, but w/ the Blinds and I was near the bottom I felt like I had to pull the trigger and take a shot. I wasn't worried about making it a couple more spots higher, I was playing for the win.