Finding the Fourth Proportional to 5,160.78, 7,743.33 and 3,711.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,160.78 : 7,743.33 = 3,711.42 : x
2. Step 2: Convert to fraction form
   5,160.78/7,743.33 = 3,711.42/x
3. Step 3: Cross multiply
   5,160.78x = 7,743.33 × 3,711.42
4. Step 4: Simplify right side
   5,160.78x = 28,738,749.83
5. Step 5: Solve for x
   x = 28,738,749.83/5,160.78
6. Step 6: Final answer
   x = 5,568.68