Finding the Fourth Proportional to 17,081.57, 23,571.42 and 9,911.70

Step by Step Solution

1. Step 1: Write the proportion equation
   17,081.57 : 23,571.42 = 9,911.70 : x
2. Step 2: Convert to fraction form
   17,081.57/23,571.42 = 9,911.70/x
3. Step 3: Cross multiply
   17,081.57x = 23,571.42 × 9,911.70
4. Step 4: Simplify right side
   17,081.57x = 233,632,806.45
5. Step 5: Solve for x
   x = 233,632,806.45/17,081.57
6. Step 6: Final answer
   x = 13,677.48