Finding the Fourth Proportional to 31,382.37, 43,310.43 and 17,238.15

Step by Step Solution

1. Step 1: Write the proportion equation
   31,382.37 : 43,310.43 = 17,238.15 : x
2. Step 2: Convert to fraction form
   31,382.37/43,310.43 = 17,238.15/x
3. Step 3: Cross multiply
   31,382.37x = 43,310.43 × 17,238.15
4. Step 4: Simplify right side
   31,382.37x = 746,591,688.90
5. Step 5: Solve for x
   x = 746,591,688.90/31,382.37
6. Step 6: Final answer
   x = 23,790.16