Finding the Fourth Proportional to 28,500.62, 42,743.48 and 8,505.41

Step by Step Solution

1. Step 1: Write the proportion equation
   28,500.62 : 42,743.48 = 8,505.41 : x
2. Step 2: Convert to fraction form
   28,500.62/42,743.48 = 8,505.41/x
3. Step 3: Cross multiply
   28,500.62x = 42,743.48 × 8,505.41
4. Step 4: Simplify right side
   28,500.62x = 363,550,565.98
5. Step 5: Solve for x
   x = 363,550,565.98/28,500.62
6. Step 6: Final answer
   x = 12,755.88