Finding the Fourth Proportional to 8,661.53, 12,924.27 and 8,132.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,661.53 : 12,924.27 = 8,132.55 : x
2. Step 2: Convert to fraction form
   8,661.53/12,924.27 = 8,132.55/x
3. Step 3: Cross multiply
   8,661.53x = 12,924.27 × 8,132.55
4. Step 4: Simplify right side
   8,661.53x = 105,107,307.66
5. Step 5: Solve for x
   x = 105,107,307.66/8,661.53
6. Step 6: Final answer
   x = 12,134.96