Q. Is it alright to end a relative clause with a preposition, such as in the following: “The credit card you charge your rental fee to . . .”
A. Considering you’ve written alright rather than the standard all right, our answer would be yes (or yep). But seriously, even if you were to elevate your diction to a somewhat higher register of formality, the question you seek an answer to would still get a yes (and alright is all right with us outside formal, edited prose).