Finding the Fourth Proportional to 17,665.50, 26,437.15 and 10,908.31

Step by Step Solution

1. Step 1: Write the proportion equation
   17,665.50 : 26,437.15 = 10,908.31 : x
2. Step 2: Convert to fraction form
   17,665.50/26,437.15 = 10,908.31/x
3. Step 3: Cross multiply
   17,665.50x = 26,437.15 × 10,908.31
4. Step 4: Simplify right side
   17,665.50x = 288,384,674.40
5. Step 5: Solve for x
   x = 288,384,674.40/17,665.50
6. Step 6: Final answer
   x = 16,324.74