Finding the Fourth Proportional to 52,437.78, 72,364.50 and 28,565.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,437.78 : 72,364.50 = 28,565.10 : x
2. Step 2: Convert to fraction form
   52,437.78/72,364.50 = 28,565.10/x
3. Step 3: Cross multiply
   52,437.78x = 72,364.50 × 28,565.10
4. Step 4: Simplify right side
   52,437.78x = 2,067,099,178.95
5. Step 5: Solve for x
   x = 2,067,099,178.95/52,437.78
6. Step 6: Final answer
   x = 39,420.04