Finding the Fourth Proportional to 13,118.38, 18,103.14 and 7,150.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.38 : 18,103.14 = 7,150.10 : x
2. Step 2: Convert to fraction form
   13,118.38/18,103.14 = 7,150.10/x
3. Step 3: Cross multiply
   13,118.38x = 18,103.14 × 7,150.10
4. Step 4: Simplify right side
   13,118.38x = 129,439,261.31
5. Step 5: Solve for x
   x = 129,439,261.31/13,118.38
6. Step 6: Final answer
   x = 9,867.02