\[\boxed{\text{4.\ 209}}\]
\[\textbf{а)}\ 4\frac{7}{13} + \left( - 4\frac{7}{13} \right) = 0\]
\[\textbf{б)}\ 2\frac{1}{4} + \left( - 1\frac{1}{6} \right) = 2\frac{3}{12} - 1\frac{2}{12} =\]
\[= 1\frac{1}{12}\]
\[\textbf{в)} - 1 + \frac{3}{8} = - \frac{5}{8}\]
\[\textbf{г)} - 5\frac{5}{8} + 3\frac{1}{4} = - \left( 5\frac{5}{8} - 3\frac{2}{8} \right) =\]
\[= - 2\frac{3}{8}\]
\[\textbf{д)} - 1\frac{2}{5} + \frac{3}{4} = - \left( 1\frac{8}{20} - \frac{15}{20} \right) =\]
\[= - \left( \frac{28}{20} - \frac{15}{20} \right) = - \frac{13}{20}\]
\[\textbf{е)} - \frac{4}{5} + 5\frac{4}{15} = 4\frac{19}{15} - \frac{12}{15} =\]
\[= 4\frac{7}{15}\ \]
\[\textbf{ж)} - 2\frac{1}{3} + 3\frac{2}{5} = 3\frac{6}{15} - 2\frac{5}{15} =\]
\[= 1\frac{1}{15}\]
\[\textbf{з)}\ 3\frac{8}{11} + \left( - 4\frac{3}{22} \right) =\]
\[= - \left( 3\frac{25}{22} - 3\frac{16}{22} \right) = - \frac{9}{22}\]