Finding the Fourth Proportional to 5,147.55, 7,103.61 and 2,789.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,147.55 : 7,103.61 = 2,789.69 : x
2. Step 2: Convert to fraction form
   5,147.55/7,103.61 = 2,789.69/x
3. Step 3: Cross multiply
   5,147.55x = 7,103.61 × 2,789.69
4. Step 4: Simplify right side
   5,147.55x = 19,816,834.26
5. Step 5: Solve for x
   x = 19,816,834.26/5,147.55
6. Step 6: Final answer
   x = 3,849.76