Finding the Fourth Proportional to 10,976.24, 16,443.72 and 5,423.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,976.24 : 16,443.72 = 5,423.12 : x
2. Step 2: Convert to fraction form
   10,976.24/16,443.72 = 5,423.12/x
3. Step 3: Cross multiply
   10,976.24x = 16,443.72 × 5,423.12
4. Step 4: Simplify right side
   10,976.24x = 89,176,266.81
5. Step 5: Solve for x
   x = 89,176,266.81/10,976.24
6. Step 6: Final answer
   x = 8,124.48