If $N=\{1,2,3, \ldots\}$ is the set of natural numbers, and given that
$$
\begin{aligned}
& X=\{x: x \in N \text { and } x \text { even }\} \\
& Y=\{x: x \in N \text { and } x \text { divisible by } 3\} \\
& Z=\{x: x \in N \text { and } 9<x \leq 20\}
\end{aligned}
$$
find the set $X \cap(Y \cup Z)$.