Finding the Fourth Proportional to 10,911.61, 15,066.90 and 8,895.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,911.61 : 15,066.90 = 8,895.34 : x
2. Step 2: Convert to fraction form
   10,911.61/15,066.90 = 8,895.34/x
3. Step 3: Cross multiply
   10,911.61x = 15,066.90 × 8,895.34
4. Step 4: Simplify right side
   10,911.61x = 134,025,078.43
5. Step 5: Solve for x
   x = 134,025,078.43/10,911.61
6. Step 6: Final answer
   x = 12,282.80