Finding the Fourth Proportional to 52,089.16, 71,882.78 and 28,215.86

Step by Step Solution

1. Step 1: Write the proportion equation
   52,089.16 : 71,882.78 = 28,215.86 : x
2. Step 2: Convert to fraction form
   52,089.16/71,882.78 = 28,215.86/x
3. Step 3: Cross multiply
   52,089.16x = 71,882.78 × 28,215.86
4. Step 4: Simplify right side
   52,089.16x = 2,028,234,456.89
5. Step 5: Solve for x
   x = 2,028,234,456.89/52,089.16
6. Step 6: Final answer
   x = 38,937.75