Finding the Fourth Proportional to 17,687.97, 26,522.82 and 5,206.38

Step by Step Solution

1. Step 1: Write the proportion equation
   17,687.97 : 26,522.82 = 5,206.38 : x
2. Step 2: Convert to fraction form
   17,687.97/26,522.82 = 5,206.38/x
3. Step 3: Cross multiply
   17,687.97x = 26,522.82 × 5,206.38
4. Step 4: Simplify right side
   17,687.97x = 138,087,879.59
5. Step 5: Solve for x
   x = 138,087,879.59/17,687.97
6. Step 6: Final answer
   x = 7,806.88