Finding the Fourth Proportional to 9,354.27, 12,909.54 and 5,375.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,354.27 : 12,909.54 = 5,375.15 : x
2. Step 2: Convert to fraction form
   9,354.27/12,909.54 = 5,375.15/x
3. Step 3: Cross multiply
   9,354.27x = 12,909.54 × 5,375.15
4. Step 4: Simplify right side
   9,354.27x = 69,390,713.93
5. Step 5: Solve for x
   x = 69,390,713.93/9,354.27
6. Step 6: Final answer
   x = 7,418.08