Finding the Fourth Proportional to 12,410.39, 17,126.33 and 7,105.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,410.39 : 17,126.33 = 7,105.20 : x
2. Step 2: Convert to fraction form
   12,410.39/17,126.33 = 7,105.20/x
3. Step 3: Cross multiply
   12,410.39x = 17,126.33 × 7,105.20
4. Step 4: Simplify right side
   12,410.39x = 121,685,964.39
5. Step 5: Solve for x
   x = 121,685,964.39/12,410.39
6. Step 6: Final answer
   x = 9,805.17