What was the amount of the loan granted on January $25$ with interest of $4\mathrm{.}68\%$ simple annual interest if on May $12$ this $4\mathrm{.}68\%$ simple annual interest if on May $12$ this document traded at $$26,846?$ Assume $4\mathrm{.}77\%$ simple annual discount rate and maturity on the following September $18$