Finding the Fourth Proportional to 5,147.07, 7,103.31 and 2,909.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,147.07 : 7,103.31 = 2,909.15 : x
2. Step 2: Convert to fraction form
   5,147.07/7,103.31 = 2,909.15/x
3. Step 3: Cross multiply
   5,147.07x = 7,103.31 × 2,909.15
4. Step 4: Simplify right side
   5,147.07x = 20,664,590.86
5. Step 5: Solve for x
   x = 20,664,590.86/5,147.07
6. Step 6: Final answer
   x = 4,014.83