Finding the Fourth Proportional to 13,119.15, 18,104.91 and 7,454.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,119.15 : 18,104.91 = 7,454.86 : x
2. Step 2: Convert to fraction form
   13,119.15/18,104.91 = 7,454.86/x
3. Step 3: Cross multiply
   13,119.15x = 18,104.91 × 7,454.86
4. Step 4: Simplify right side
   13,119.15x = 134,969,524.10
5. Step 5: Solve for x
   x = 134,969,524.10/13,119.15
6. Step 6: Final answer
   x = 10,287.98