Geothermal's cost of debt is $5\mathrm{.}6\%,$ the dividend yield on the preferred is $6\mathrm{.}2\%,$ the cost of equity is $10\mathrm{.}1\%,$ and the tax rate is $22\%.$ The company uses $26\%$ of debt in its capital structure and $22\%$ of preferred; the rest is common equity. The weighted average cost of capital for the company is $................................\%($accurate to $4$ decimals$)$