Найдите неизвестный член пропорции:2 3/8: 3 1/6= 9,1:d

[latex] \cfrac{2 \frac{3}{8} }{3 \frac{1}{6} } = \frac{9,1}{d} \\\ d = \cfrac{9.1\cdot3 \frac{1}{6} }{2 \frac{3}{8} } = \cfrac{9.1\cdot \frac{19}{6} }{ \frac{19}{8} } = \cfrac{ \frac{91}{10} \cdot \frac{1}{6} }{ \frac{1}{8} } =\frac{91}{10} \cdot \frac{8}{6}=\frac{91}{10} \cdot \frac{4}{3}=\frac{364}{30} =\frac{182}{15} =12 \frac{2}{15} [/latex]