Finding the Fourth Proportional to 12,683.88, 17,504.37 and 7,018.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,683.88 : 17,504.37 = 7,018.61 : x
2. Step 2: Convert to fraction form
   12,683.88/17,504.37 = 7,018.61/x
3. Step 3: Cross multiply
   12,683.88x = 17,504.37 × 7,018.61
4. Step 4: Simplify right side
   12,683.88x = 122,856,258.80
5. Step 5: Solve for x
   x = 122,856,258.80/12,683.88
6. Step 6: Final answer
   x = 9,686.02