Finding the Fourth Proportional to 10,691.78, 14,734.24 and 9,292.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,691.78 : 14,734.24 = 9,292.10 : x
2. Step 2: Convert to fraction form
   10,691.78/14,734.24 = 9,292.10/x
3. Step 3: Cross multiply
   10,691.78x = 14,734.24 × 9,292.10
4. Step 4: Simplify right side
   10,691.78x = 136,911,934.60
5. Step 5: Solve for x
   x = 136,911,934.60/10,691.78
6. Step 6: Final answer
   x = 12,805.35