Finding the Fourth Proportional to 8,651.69, 12,982.45 and 3,387.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,651.69 : 12,982.45 = 3,387.12 : x
2. Step 2: Convert to fraction form
   8,651.69/12,982.45 = 3,387.12/x
3. Step 3: Cross multiply
   8,651.69x = 12,982.45 × 3,387.12
4. Step 4: Simplify right side
   8,651.69x = 43,973,116.04
5. Step 5: Solve for x
   x = 43,973,116.04/8,651.69
6. Step 6: Final answer
   x = 5,082.60