Finding the Fourth Proportional to 10,951.52, 16,428.90 and 5,757.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,951.52 : 16,428.90 = 5,757.80 : x
2. Step 2: Convert to fraction form
   10,951.52/16,428.90 = 5,757.80/x
3. Step 3: Cross multiply
   10,951.52x = 16,428.90 × 5,757.80
4. Step 4: Simplify right side
   10,951.52x = 94,594,320.42
5. Step 5: Solve for x
   x = 94,594,320.42/10,951.52
6. Step 6: Final answer
   x = 8,637.55