A grocery store sells a bag of 6 oranges for $3.72. How much would it cost for 9 oranges?
To find out how much it would cost for 9 oranges, we need to find the cost per orange.
Cost per orange = Total cost / Total number of oranges = $3.72 / 6 = $0.62 (rounded to the nearest cent).
Therefore, it would cost 9 * $0.62 = $<<9*0.62=5.58>>5.58 for 9 oranges. Answer: \boxed{5.58}.