Finding the Fourth Proportional to 52,215.20, 72,057.34 and 28,341.87

Step by Step Solution

1. Step 1: Write the proportion equation
   52,215.20 : 72,057.34 = 28,341.87 : x
2. Step 2: Convert to fraction form
   52,215.20/72,057.34 = 28,341.87/x
3. Step 3: Cross multiply
   52,215.20x = 72,057.34 × 28,341.87
4. Step 4: Simplify right side
   52,215.20x = 2,042,239,762.83
5. Step 5: Solve for x
   x = 2,042,239,762.83/52,215.20
6. Step 6: Final answer
   x = 39,111.98