Finding the Fourth Proportional to 13,118.91, 18,103.57 and 7,150.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,118.91 : 18,103.57 = 7,150.46 : x
2. Step 2: Convert to fraction form
   13,118.91/18,103.57 = 7,150.46/x
3. Step 3: Cross multiply
   13,118.91x = 18,103.57 × 7,150.46
4. Step 4: Simplify right side
   13,118.91x = 129,448,744.75
5. Step 5: Solve for x
   x = 129,448,744.75/13,118.91
6. Step 6: Final answer
   x = 9,867.34