Finding the Fourth Proportional to 17,286, 23,857.56 and 13,086.96

Step by Step Solution

1. Step 1: Write the proportion equation
   17,286 : 23,857.56 = 13,086.96 : x
2. Step 2: Convert to fraction form
   17,286/23,857.56 = 13,086.96/x
3. Step 3: Cross multiply
   17,286x = 23,857.56 × 13,086.96
4. Step 4: Simplify right side
   17,286x = 312,222,933.42
5. Step 5: Solve for x
   x = 312,222,933.42/17,286
6. Step 6: Final answer
   x = 18,062.19