Finding the Fourth Proportional to 12,801.40, 17,662.25 and 8,331.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,801.40 : 17,662.25 = 8,331.71 : x
2. Step 2: Convert to fraction form
   12,801.40/17,662.25 = 8,331.71/x
3. Step 3: Cross multiply
   12,801.40x = 17,662.25 × 8,331.71
4. Step 4: Simplify right side
   12,801.40x = 147,156,703.29
5. Step 5: Solve for x
   x = 147,156,703.29/12,801.40
6. Step 6: Final answer
   x = 11,495.36