Garnet, Inc., has a target debt$-$equity ratio of $0\mathrm{.}59.$ Its WACC is $12\mathrm{.}4\%,$ and the tax rate is $36\%$

If you know that the after$-$tax cost of debt is $6\mathrm{.}3\%,$ what is the cost of equity? $($Report answer in percentage terms and round to $2$ decimal places. Do not round intermediate calculations$).$