Finding the Fourth Proportional to 5,147.31, 7,103.43 and 2,909.14

Step by Step Solution

1. Step 1: Write the proportion equation
   5,147.31 : 7,103.43 = 2,909.14 : x
2. Step 2: Convert to fraction form
   5,147.31/7,103.43 = 2,909.14/x
3. Step 3: Cross multiply
   5,147.31x = 7,103.43 × 2,909.14
4. Step 4: Simplify right side
   5,147.31x = 20,664,872.35
5. Step 5: Solve for x
   x = 20,664,872.35/5,147.31
6. Step 6: Final answer
   x = 4,014.69