Finding the Fourth Proportional to 5,167.59, 7,131.25 and 2,809.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,167.59 : 7,131.25 = 2,809.72 : x
2. Step 2: Convert to fraction form
   5,167.59/7,131.25 = 2,809.72/x
3. Step 3: Cross multiply
   5,167.59x = 7,131.25 × 2,809.72
4. Step 4: Simplify right side
   5,167.59x = 20,036,815.75
5. Step 5: Solve for x
   x = 20,036,815.75/5,167.59
6. Step 6: Final answer
   x = 3,877.40