Finding the Fourth Proportional to 52,692.57, 72,716.33 and 28,818.74

Step by Step Solution

1. Step 1: Write the proportion equation
   52,692.57 : 72,716.33 = 28,818.74 : x
2. Step 2: Convert to fraction form
   52,692.57/72,716.33 = 28,818.74/x
3. Step 3: Cross multiply
   52,692.57x = 72,716.33 × 28,818.74
4. Step 4: Simplify right side
   52,692.57x = 2,095,592,500.35
5. Step 5: Solve for x
   x = 2,095,592,500.35/52,692.57
6. Step 6: Final answer
   x = 39,770.17