Finding the Fourth Proportional to 6,615.41, 9,912.17 and 4,144.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,615.41 : 9,912.17 = 4,144.10 : x
2. Step 2: Convert to fraction form
   6,615.41/9,912.17 = 4,144.10/x
3. Step 3: Cross multiply
   6,615.41x = 9,912.17 × 4,144.10
4. Step 4: Simplify right side
   6,615.41x = 41,076,984.50
5. Step 5: Solve for x
   x = 41,076,984.50/6,615.41
6. Step 6: Final answer
   x = 6,209.29