Finding the Fourth Proportional to 5,179.72, 7,142.50 and 3,851.24

Step by Step Solution

1. Step 1: Write the proportion equation
   5,179.72 : 7,142.50 = 3,851.24 : x
2. Step 2: Convert to fraction form
   5,179.72/7,142.50 = 3,851.24/x
3. Step 3: Cross multiply
   5,179.72x = 7,142.50 × 3,851.24
4. Step 4: Simplify right side
   5,179.72x = 27,507,481.70
5. Step 5: Solve for x
   x = 27,507,481.70/5,179.72
6. Step 6: Final answer
   x = 5,310.61