To find the unknown value (let's call it \( x \)) in the equation \( (-2.4) \times x = 28.68 \), you can isolate \( x \) by dividing both sides of the equation by -2.4:
\[ x = \frac{28.68}{-2.4} \]
Now, doing the division:
\[ x = -11.95 \]
So, the unknown value is \( -11.95 \).