Finding the Fourth Proportional to 17,665.36, 24,378.09 and 9,707.40

Step by Step Solution

1. Step 1: Write the proportion equation
   17,665.36 : 24,378.09 = 9,707.40 : x
2. Step 2: Convert to fraction form
   17,665.36/24,378.09 = 9,707.40/x
3. Step 3: Cross multiply
   17,665.36x = 24,378.09 × 9,707.40
4. Step 4: Simplify right side
   17,665.36x = 236,647,870.87
5. Step 5: Solve for x
   x = 236,647,870.87/17,665.36
6. Step 6: Final answer
   x = 13,396.15