Finding the Fourth Proportional to 17,081.69, 25,640.69 and 15,119.78

Step by Step Solution

1. Step 1: Write the proportion equation
   17,081.69 : 25,640.69 = 15,119.78 : x
2. Step 2: Convert to fraction form
   17,081.69/25,640.69 = 15,119.78/x
3. Step 3: Cross multiply
   17,081.69x = 25,640.69 × 15,119.78
4. Step 4: Simplify right side
   17,081.69x = 387,681,388.05
5. Step 5: Solve for x
   x = 387,681,388.05/17,081.69
6. Step 6: Final answer
   x = 22,695.73