Finding the Fourth Proportional to 17,086.68, 23,580.21 and 9,916.04

Step by Step Solution

1. Step 1: Write the proportion equation
   17,086.68 : 23,580.21 = 9,916.04 : x
2. Step 2: Convert to fraction form
   17,086.68/23,580.21 = 9,916.04/x
3. Step 3: Cross multiply
   17,086.68x = 23,580.21 × 9,916.04
4. Step 4: Simplify right side
   17,086.68x = 233,822,401.70
5. Step 5: Solve for x
   x = 233,822,401.70/17,086.68
6. Step 6: Final answer
   x = 13,684.48