Finding the Fourth Proportional to 9,931.28, 14,892.32 and 5,772.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,931.28 : 14,892.32 = 5,772.47 : x
2. Step 2: Convert to fraction form
   9,931.28/14,892.32 = 5,772.47/x
3. Step 3: Cross multiply
   9,931.28x = 14,892.32 × 5,772.47
4. Step 4: Simplify right side
   9,931.28x = 85,965,410.40
5. Step 5: Solve for x
   x = 85,965,410.40/9,931.28
6. Step 6: Final answer
   x = 8,656.03