Finding the Fourth Proportional to 8,439.43, 12,647.69 and 4,682.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,439.43 : 12,647.69 = 4,682.35 : x
2. Step 2: Convert to fraction form
   8,439.43/12,647.69 = 4,682.35/x
3. Step 3: Cross multiply
   8,439.43x = 12,647.69 × 4,682.35
4. Step 4: Simplify right side
   8,439.43x = 59,220,911.27
5. Step 5: Solve for x
   x = 59,220,911.27/8,439.43
6. Step 6: Final answer
   x = 7,017.17