Finding the Fourth Proportional to 6,506.28, 8,978.76 and 3,711.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,506.28 : 8,978.76 = 3,711.78 : x
2. Step 2: Convert to fraction form
   6,506.28/8,978.76 = 3,711.78/x
3. Step 3: Cross multiply
   6,506.28x = 8,978.76 × 3,711.78
4. Step 4: Simplify right side
   6,506.28x = 33,327,181.79
5. Step 5: Solve for x
   x = 33,327,181.79/6,506.28
6. Step 6: Final answer
   x = 5,122.31