Finding the Fourth Proportional to 8,680.50, 13,016.16 and 3,996.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,680.50 : 13,016.16 = 3,996.42 : x
2. Step 2: Convert to fraction form
   8,680.50/13,016.16 = 3,996.42/x
3. Step 3: Cross multiply
   8,680.50x = 13,016.16 × 3,996.42
4. Step 4: Simplify right side
   8,680.50x = 52,018,042.15
5. Step 5: Solve for x
   x = 52,018,042.15/8,680.50
6. Step 6: Final answer
   x = 5,992.52