Finding the Fourth Proportional to 19.69, 29.37 and 17.31

Step by Step Solution

1. Step 1: Write the proportion equation
   19.69 : 29.37 = 17.31 : x
2. Step 2: Convert to fraction form
   19.69/29.37 = 17.31/x
3. Step 3: Cross multiply
   19.69x = 29.37 × 17.31
4. Step 4: Simplify right side
   19.69x = 508.31
5. Step 5: Solve for x
   x = 508.31/19.69
6. Step 6: Final answer
   x = 25.82