Finding the Fourth Proportional to 17,286.50, 23,858.25 and 13,087.46

Step by Step Solution

1. Step 1: Write the proportion equation
   17,286.50 : 23,858.25 = 13,087.46 : x
2. Step 2: Convert to fraction form
   17,286.50/23,858.25 = 13,087.46/x
3. Step 3: Cross multiply
   17,286.50x = 23,858.25 × 13,087.46
4. Step 4: Simplify right side
   17,286.50x = 312,243,892.55
5. Step 5: Solve for x
   x = 312,243,892.55/17,286.50
6. Step 6: Final answer
   x = 18,062.88