How to Start an Enumerate List at a Number Other Than 1

You can change the counter named enumi like this:

\begin{enumerate}
    \setcounter{enumi}{4}
    \item fifth element
\end{enumerate}

(If you have lists at deeper levels of nesting, the relevant counters are enumii, enumiii, and enumiv.)

Source:
https://tex.stackexchange.com/questions/142/how-can-i-make-an-enumerate-list-start-at-something-other-than-1