Write the following numbers in order of size, starting with the smallest. $-\sqrt{9.87}, \quad -\frac{22}{7}, \quad -314.2\%, \quad -3.143$ Answer ... , ... , ... , ...

1. Convert all given numbers to decimal form for easy comparison.

$-\sqrt{9.87} \approx -3.14166$
$-\frac{22}{7} \approx -3.14286$
$-314.2\% = -3.142$
$-3.143 = -3.143$

2. Order the decimals from smallest (most negative) to largest (least negative).

Comparing the decimal values:
$-3.143 < -3.14286 < -3.142 < -3.14166$

Therefore, the order is:
$-3.143, -\frac{22}{7}, -314.2\%, -\sqrt{9.87}$