Finding the Fourth Proportional to 31,737.20, 43,818.72 and 28,369.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,737.20 : 43,818.72 = 28,369.24 : x
2. Step 2: Convert to fraction form
   31,737.20/43,818.72 = 28,369.24/x
3. Step 3: Cross multiply
   31,737.20x = 43,818.72 × 28,369.24
4. Step 4: Simplify right side
   31,737.20x = 1,243,103,784.17
5. Step 5: Solve for x
   x = 1,243,103,784.17/31,737.20
6. Step 6: Final answer
   x = 39,168.67