Finding the Fourth Proportional to 52,438.92, 72,365.72 and 28,565.61

Step by Step Solution

1. Step 1: Write the proportion equation
   52,438.92 : 72,365.72 = 28,565.61 : x
2. Step 2: Convert to fraction form
   52,438.92/72,365.72 = 28,565.61/x
3. Step 3: Cross multiply
   52,438.92x = 72,365.72 × 28,565.61
4. Step 4: Simplify right side
   52,438.92x = 2,067,170,934.89
5. Step 5: Solve for x
   x = 2,067,170,934.89/52,438.92
6. Step 6: Final answer
   x = 39,420.55