Finding the Fourth Proportional to 52,212.50, 72,053.32 and 28,339.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,212.50 : 72,053.32 = 28,339.18 : x
2. Step 2: Convert to fraction form
   52,212.50/72,053.32 = 28,339.18/x
3. Step 3: Cross multiply
   52,212.50x = 72,053.32 × 28,339.18
4. Step 4: Simplify right side
   52,212.50x = 2,041,931,754.10
5. Step 5: Solve for x
   x = 2,041,931,754.10/52,212.50
6. Step 6: Final answer
   x = 39,108.10