Merico has a target capital structure of $30\%$ debt, $10\%$ preferred stock, and $60\%$ common equity. Its after tax costs of short$-$term debt is $11\%$ and long$-$term debt is $8\%.$ Short$-$term debt comprises $50\%$ of the firm's total debt. Cost of preferred equity is $13\mathrm{.}75\%.$ The company's stock is currently selling at $$21$ per share and the last dividend was $$3.$ If dividends are expected to grow at a constant rate of $4\%,$ what is the company's WACC?