Finding the Fourth Proportional to 10,908.86, 15,063.10 and 8,892.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,908.86 : 15,063.10 = 8,892.59 : x
2. Step 2: Convert to fraction form
   10,908.86/15,063.10 = 8,892.59/x
3. Step 3: Cross multiply
   10,908.86x = 15,063.10 × 8,892.59
4. Step 4: Simplify right side
   10,908.86x = 133,949,874.88
5. Step 5: Solve for x
   x = 133,949,874.88/10,908.86
6. Step 6: Final answer
   x = 12,279.00