Finding the Fourth Proportional to 17,683.38, 26,540.82 and 13,287.42

Step by Step Solution

1. Step 1: Write the proportion equation
   17,683.38 : 26,540.82 = 13,287.42 : x
2. Step 2: Convert to fraction form
   17,683.38/26,540.82 = 13,287.42/x
3. Step 3: Cross multiply
   17,683.38x = 26,540.82 × 13,287.42
4. Step 4: Simplify right side
   17,683.38x = 352,659,022.48
5. Step 5: Solve for x
   x = 352,659,022.48/17,683.38
6. Step 6: Final answer
   x = 19,942.96