Finding the Fourth Proportional to 5,147.42, 7,103.72 and 2,909.39

Step by Step Solution

1. Step 1: Write the proportion equation
   5,147.42 : 7,103.72 = 2,909.39 : x
2. Step 2: Convert to fraction form
   5,147.42/7,103.72 = 2,909.39/x
3. Step 3: Cross multiply
   5,147.42x = 7,103.72 × 2,909.39
4. Step 4: Simplify right side
   5,147.42x = 20,667,491.93
5. Step 5: Solve for x
   x = 20,667,491.93/5,147.42
6. Step 6: Final answer
   x = 4,015.12