Finding the Fourth Proportional to 13,118.49, 18,103.41 and 7,150.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.49 : 18,103.41 = 7,150.05 : x
2. Step 2: Convert to fraction form
   13,118.49/18,103.41 = 7,150.05/x
3. Step 3: Cross multiply
   13,118.49x = 18,103.41 × 7,150.05
4. Step 4: Simplify right side
   13,118.49x = 129,440,286.67
5. Step 5: Solve for x
   x = 129,440,286.67/13,118.49
6. Step 6: Final answer
   x = 9,867.01