Finding the Fourth Proportional to 10,892.30, 15,031.17 and 7,108.29

Step by Step Solution

1. Step 1: Write the proportion equation
   10,892.30 : 15,031.17 = 7,108.29 : x
2. Step 2: Convert to fraction form
   10,892.30/15,031.17 = 7,108.29/x
3. Step 3: Cross multiply
   10,892.30x = 15,031.17 × 7,108.29
4. Step 4: Simplify right side
   10,892.30x = 106,845,915.40
5. Step 5: Solve for x
   x = 106,845,915.40/10,892.30
6. Step 6: Final answer
   x = 9,809.31