Finding the Fourth Proportional to 52,564.61, 72,540.56 and 28,692.90

Step by Step Solution

1. Step 1: Write the proportion equation
   52,564.61 : 72,540.56 = 28,692.90 : x
2. Step 2: Convert to fraction form
   52,564.61/72,540.56 = 28,692.90/x
3. Step 3: Cross multiply
   52,564.61x = 72,540.56 × 28,692.90
4. Step 4: Simplify right side
   52,564.61x = 2,081,399,105.76
5. Step 5: Solve for x
   x = 2,081,399,105.76/52,564.61
6. Step 6: Final answer
   x = 39,596.96