We start with the equation given in the problem:
\[
4x^{2} + 24 = 0
\]
Step 2: Rearrange the Equation
To solve for \( x \), we first rearrange the equation by isolating the \( x^{2} \) term:
\[
4x^{2} = -24
\]
Step 3: Simplify the Equation
Next, we divide both sides of the equation by 4 to simplify:
\[
x^{2} = -6
\]
Step 4: Solve for \( x \)
To find \( x \), we take the square root of both sides. Since we have a negative number under the square root, we introduce the imaginary unit \( i \):
\[
x = \pm \sqrt{-6} = \pm \sqrt{6}i
\]
Step 5: Write the Final Solutions
Thus, the solutions to the equation are:
\[
x = -\sqrt{6}i \quad \text{and} \quad x = \sqrt{6}i
\]