Finding the Fourth Proportional to 12,081.29, 16,664.50 and 8,729.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,081.29 : 16,664.50 = 8,729.02 : x
2. Step 2: Convert to fraction form
   12,081.29/16,664.50 = 8,729.02/x
3. Step 3: Cross multiply
   12,081.29x = 16,664.50 × 8,729.02
4. Step 4: Simplify right side
   12,081.29x = 145,464,785.53
5. Step 5: Solve for x
   x = 145,464,785.53/12,081.29
6. Step 6: Final answer
   x = 12,040.51