\[7\frac{1}{12} - \left( k - 1\frac{1}{3} \right) = 4\frac{17}{36}\]
\[k - 1\frac{1}{3} = 7\frac{1}{12} - 4\frac{17}{36}\]
\[k = 1\frac{1^{\backslash 12}}{3} + 7\frac{1^{\backslash 3}}{12} - 4\frac{17}{36}\]
\[k = 8\frac{15}{36} - 4\frac{17}{36} = 7\frac{51}{36} - 4\frac{17}{36}\]
\[k = 3\frac{24}{36} = 3\frac{2}{3}.\]