Finding the Fourth Proportional to 12,441.98, 17,168.28 and 7,664.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,441.98 : 17,168.28 = 7,664.60 : x
2. Step 2: Convert to fraction form
   12,441.98/17,168.28 = 7,664.60/x
3. Step 3: Cross multiply
   12,441.98x = 17,168.28 × 7,664.60
4. Step 4: Simplify right side
   12,441.98x = 131,587,998.89
5. Step 5: Solve for x
   x = 131,587,998.89/12,441.98
6. Step 6: Final answer
   x = 10,576.13