Finding the Fourth Proportional to 8,418.72, 12,630.42 and 3,675.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,418.72 : 12,630.42 = 3,675.29 : x
2. Step 2: Convert to fraction form
   8,418.72/12,630.42 = 3,675.29/x
3. Step 3: Cross multiply
   8,418.72x = 12,630.42 × 3,675.29
4. Step 4: Simplify right side
   8,418.72x = 46,420,456.32
5. Step 5: Solve for x
   x = 46,420,456.32/8,418.72
6. Step 6: Final answer
   x = 5,513.96