Finding the Fourth Proportional to 12,411.74, 17,128.52 and 7,108.26

Step by Step Solution

1. Step 1: Write the proportion equation
   12,411.74 : 17,128.52 = 7,108.26 : x
2. Step 2: Convert to fraction form
   12,411.74/17,128.52 = 7,108.26/x
3. Step 3: Cross multiply
   12,411.74x = 17,128.52 × 7,108.26
4. Step 4: Simplify right side
   12,411.74x = 121,754,034.17
5. Step 5: Solve for x
   x = 121,754,034.17/12,411.74
6. Step 6: Final answer
   x = 9,809.59