Finding the Fourth Proportional to 5,147.55, 7,103.56 and 2,789.67

Step by Step Solution

1. Step 1: Write the proportion equation
   5,147.55 : 7,103.56 = 2,789.67 : x
2. Step 2: Convert to fraction form
   5,147.55/7,103.56 = 2,789.67/x
3. Step 3: Cross multiply
   5,147.55x = 7,103.56 × 2,789.67
4. Step 4: Simplify right side
   5,147.55x = 19,816,588.23
5. Step 5: Solve for x
   x = 19,816,588.23/5,147.55
6. Step 6: Final answer
   x = 3,849.71