Finding the Fourth Proportional to 5,168.72, 7,134.36 and 3,074.24

Step by Step Solution

1. Step 1: Write the proportion equation
   5,168.72 : 7,134.36 = 3,074.24 : x
2. Step 2: Convert to fraction form
   5,168.72/7,134.36 = 3,074.24/x
3. Step 3: Cross multiply
   5,168.72x = 7,134.36 × 3,074.24
4. Step 4: Simplify right side
   5,168.72x = 21,932,734.89
5. Step 5: Solve for x
   x = 21,932,734.89/5,168.72
6. Step 6: Final answer
   x = 4,243.36