Finding the Fourth Proportional to 8,662.61, 12,989.27 and 4,498.41

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.61 : 12,989.27 = 4,498.41 : x
2. Step 2: Convert to fraction form
   8,662.61/12,989.27 = 4,498.41/x
3. Step 3: Cross multiply
   8,662.61x = 12,989.27 × 4,498.41
4. Step 4: Simplify right side
   8,662.61x = 58,431,039.57
5. Step 5: Solve for x
   x = 58,431,039.57/8,662.61
6. Step 6: Final answer
   x = 6,745.20