Finding the Fourth Proportional to 9,061.28, 12,498.24 and 8,756.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,061.28 : 12,498.24 = 8,756.47 : x
2. Step 2: Convert to fraction form
   9,061.28/12,498.24 = 8,756.47/x
3. Step 3: Cross multiply
   9,061.28x = 12,498.24 × 8,756.47
4. Step 4: Simplify right side
   9,061.28x = 109,440,512.07
5. Step 5: Solve for x
   x = 109,440,512.07/9,061.28
6. Step 6: Final answer
   x = 12,077.82