Finding the Fourth Proportional to 5,766.48, 7,958.48 and 3,778.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,766.48 : 7,958.48 = 3,778.72 : x
2. Step 2: Convert to fraction form
   5,766.48/7,958.48 = 3,778.72/x
3. Step 3: Cross multiply
   5,766.48x = 7,958.48 × 3,778.72
4. Step 4: Simplify right side
   5,766.48x = 30,072,867.55
5. Step 5: Solve for x
   x = 30,072,867.55/5,766.48
6. Step 6: Final answer
   x = 5,215.12