Finding the Fourth Proportional to 12,411.85, 17,126.42 and 7,105.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,411.85 : 17,126.42 = 7,105.64 : x
2. Step 2: Convert to fraction form
   12,411.85/17,126.42 = 7,105.64/x
3. Step 3: Cross multiply
   12,411.85x = 17,126.42 × 7,105.64
4. Step 4: Simplify right side
   12,411.85x = 121,694,190.15
5. Step 5: Solve for x
   x = 121,694,190.15/12,411.85
6. Step 6: Final answer
   x = 9,804.68