Finding the Fourth Proportional to 5,167.57, 7,131.27 and 2,809.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,167.57 : 7,131.27 = 2,809.69 : x
2. Step 2: Convert to fraction form
   5,167.57/7,131.27 = 2,809.69/x
3. Step 3: Cross multiply
   5,167.57x = 7,131.27 × 2,809.69
4. Step 4: Simplify right side
   5,167.57x = 20,036,658.01
5. Step 5: Solve for x
   x = 20,036,658.01/5,167.57
6. Step 6: Final answer
   x = 3,877.38