Finding the Fourth Proportional to 12,801.15, 17,661.90 and 8,331.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,801.15 : 17,661.90 = 8,331.48 : x
2. Step 2: Convert to fraction form
   12,801.15/17,661.90 = 8,331.48/x
3. Step 3: Cross multiply
   12,801.15x = 17,661.90 × 8,331.48
4. Step 4: Simplify right side
   12,801.15x = 147,149,766.61
5. Step 5: Solve for x
   x = 147,149,766.61/12,801.15
6. Step 6: Final answer
   x = 11,495.04