Finding the Fourth Proportional to 47,386.71, 71,080.16 and 12,326.31

Step by Step Solution

1. Step 1: Write the proportion equation
   47,386.71 : 71,080.16 = 12,326.31 : x
2. Step 2: Convert to fraction form
   47,386.71/71,080.16 = 12,326.31/x
3. Step 3: Cross multiply
   47,386.71x = 71,080.16 × 12,326.31
4. Step 4: Simplify right side
   47,386.71x = 876,156,025.38
5. Step 5: Solve for x
   x = 876,156,025.38/47,386.71
6. Step 6: Final answer
   x = 18,489.49