Finding the Fourth Proportional to 52,288.50, 72,158.59 and 28,415.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,288.50 : 72,158.59 = 28,415.18 : x
2. Step 2: Convert to fraction form
   52,288.50/72,158.59 = 28,415.18/x
3. Step 3: Cross multiply
   52,288.50x = 72,158.59 × 28,415.18
4. Step 4: Simplify right side
   52,288.50x = 2,050,398,891.57
5. Step 5: Solve for x
   x = 2,050,398,891.57/52,288.50
6. Step 6: Final answer
   x = 39,213.19