A loan (promissory note) of $6,400 was made. It is to be paid back in 2 years with interest of 4.55% compounded quarterly. What would be the appropriate price to pay for the contract 18 months after the original contract date to yield the buyer 4.30% compounded semi-annually? Round your final answer to two decimals. Do not round intermediate steps. Do not include the dollar sign ($) in your answer. For example, $89.36 input as 89.36. Your Answer: