Finding the Fourth Proportional to 52,737.69, 72,778.17 and 28,865.91

Step by Step Solution

1. Step 1: Write the proportion equation
   52,737.69 : 72,778.17 = 28,865.91 : x
2. Step 2: Convert to fraction form
   52,737.69/72,778.17 = 28,865.91/x
3. Step 3: Cross multiply
   52,737.69x = 72,778.17 × 28,865.91
4. Step 4: Simplify right side
   52,737.69x = 2,100,808,105.18
5. Step 5: Solve for x
   x = 2,100,808,105.18/52,737.69
6. Step 6: Final answer
   x = 39,835.04