Finding the Fourth Proportional to 5,778.86, 7,974.89 and 3,126.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,778.86 : 7,974.89 = 3,126.32 : x
2. Step 2: Convert to fraction form
   5,778.86/7,974.89 = 3,126.32/x
3. Step 3: Cross multiply
   5,778.86x = 7,974.89 × 3,126.32
4. Step 4: Simplify right side
   5,778.86x = 24,932,002.60
5. Step 5: Solve for x
   x = 24,932,002.60/5,778.86
6. Step 6: Final answer
   x = 4,314.35