How can i remove a stripped bolt in my fourwheeler rim...?

I recently bought some new rims and tires for my fourwheeler and i have replaced all of them besides the front left wheel. The reason is because one of the bolts is nearly rounded it is so stripped, and i think it rusted on. i bought a stanley bolt out kit from sears, and i tried using it, but the #6 is to small to take off the bolt and the #7 is the actual one i need, but i dont have a big enough wrench to take it off. i need a 22mm wrench but i dont have time to get another anytime soon. what tools or methods can i use to remove this bolt? P.S. i need some tool or method that uses something to extend out from the bolt because i have no room to use a wrench within the dish of the rim.