# \bm and \num inside align

What I'm trying to do is write a number as \num{number} in boldface inside an align environment. After looking for an answer, I found bm and siunitx mismatch, but it didn't solve the problem. Here's an MWE:

\documentclass[10pt, fleqn]{article}

\usepackage{amsmath, amsfonts, amssymb, bm}

\usepackage{siunitx}
\sisetup{detect-weight = true,detect-inline-weight = math} % from https://tex.stackexchange.com/questions/416289/bm-and-siunitx-mismatch

\begin{document}

$\bm{bob{\num{5}\SI{30}{\km}}}$ % example looked

\begin{align*}
\bm{P_{i,\text{\textbf{ef.}}}} &= 139.40 \times 87.47 \bm{\approx 12193.88} \text{ \textbf{kN}} \\
\bm{P_{0}} &= \num{12193.88} \times (1 - 0.15) \bm{\approx {\num{10364.79}}} \text{ \textbf{kN}}
\end{align*}

\end{document}

which generates the following

In the second equation the implementation of \bm{\num{10364.79}} doesn't make the number bold. Is there a way to solve this?

• It should be \SI{12193.88}{\kilo\newton} rather than \num{12193.88}\text{ kN} – egreg Oct 31 '19 at 7:36