Finding the Fourth Proportional to 8,978.30, 12,401.16 and 6,337.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.30 : 12,401.16 = 6,337.49 : x
2. Step 2: Convert to fraction form
   8,978.30/12,401.16 = 6,337.49/x
3. Step 3: Cross multiply
   8,978.30x = 12,401.16 × 6,337.49
4. Step 4: Simplify right side
   8,978.30x = 78,592,227.49
5. Step 5: Solve for x
   x = 78,592,227.49/8,978.30
6. Step 6: Final answer
   x = 8,753.58