Finding the Fourth Proportional to 9,132.30, 12,602.04 and 5,153.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,132.30 : 12,602.04 = 5,153.78 : x
2. Step 2: Convert to fraction form
   9,132.30/12,602.04 = 5,153.78/x
3. Step 3: Cross multiply
   9,132.30x = 12,602.04 × 5,153.78
4. Step 4: Simplify right side
   9,132.30x = 64,948,141.71
5. Step 5: Solve for x
   x = 64,948,141.71/9,132.30
6. Step 6: Final answer
   x = 7,111.92