Finding the Fourth Proportional to 13,118.39, 18,103.47 and 7,150.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.39 : 18,103.47 = 7,150.04 : x
2. Step 2: Convert to fraction form
   13,118.39/18,103.47 = 7,150.04/x
3. Step 3: Cross multiply
   13,118.39x = 18,103.47 × 7,150.04
4. Step 4: Simplify right side
   13,118.39x = 129,440,498.89
5. Step 5: Solve for x
   x = 129,440,498.89/13,118.39
6. Step 6: Final answer
   x = 9,867.10