Finding the Fourth Proportional to 31,128.71, 46,700.42 and 8,941.59

Step by Step Solution

1. Step 1: Write the proportion equation
   31,128.71 : 46,700.42 = 8,941.59 : x
2. Step 2: Convert to fraction form
   31,128.71/46,700.42 = 8,941.59/x
3. Step 3: Cross multiply
   31,128.71x = 46,700.42 × 8,941.59
4. Step 4: Simplify right side
   31,128.71x = 417,575,963.76
5. Step 5: Solve for x
   x = 417,575,963.76/31,128.71
6. Step 6: Final answer
   x = 13,414.50