Finding the Fourth Proportional to 52,658.22, 72,669.50 and 28,784.90

Step by Step Solution

1. Step 1: Write the proportion equation
   52,658.22 : 72,669.50 = 28,784.90 : x
2. Step 2: Convert to fraction form
   52,658.22/72,669.50 = 28,784.90/x
3. Step 3: Cross multiply
   52,658.22x = 72,669.50 × 28,784.90
4. Step 4: Simplify right side
   52,658.22x = 2,091,783,783.28
5. Step 5: Solve for x
   x = 2,091,783,783.28/52,658.22
6. Step 6: Final answer
   x = 39,723.78