Finding the Fourth Proportional to 31,314.72, 43,214.76 and 18,737.04

Step by Step Solution

1. Step 1: Write the proportion equation
   31,314.72 : 43,214.76 = 18,737.04 : x
2. Step 2: Convert to fraction form
   31,314.72/43,214.76 = 18,737.04/x
3. Step 3: Cross multiply
   31,314.72x = 43,214.76 × 18,737.04
4. Step 4: Simplify right side
   31,314.72x = 809,716,686.71
5. Step 5: Solve for x
   x = 809,716,686.71/31,314.72
6. Step 6: Final answer
   x = 25,857.38