Finding the Fourth Proportional to 28,258.52, 42,385.82 and 8,537.18

Step by Step Solution

1. Step 1: Write the proportion equation
   28,258.52 : 42,385.82 = 8,537.18 : x
2. Step 2: Convert to fraction form
   28,258.52/42,385.82 = 8,537.18/x
3. Step 3: Cross multiply
   28,258.52x = 42,385.82 × 8,537.18
4. Step 4: Simplify right side
   28,258.52x = 361,855,120.17
5. Step 5: Solve for x
   x = 361,855,120.17/28,258.52
6. Step 6: Final answer
   x = 12,805.17