Finding the Fourth Proportional to 5,180.72, 7,149.16 and 2,942.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,180.72 : 7,149.16 = 2,942.56 : x
2. Step 2: Convert to fraction form
   5,180.72/7,149.16 = 2,942.56/x
3. Step 3: Cross multiply
   5,180.72x = 7,149.16 × 2,942.56
4. Step 4: Simplify right side
   5,180.72x = 21,036,844.86
5. Step 5: Solve for x
   x = 21,036,844.86/5,180.72
6. Step 6: Final answer
   x = 4,060.60