Finding the Fourth Proportional to 17,191.50, 23,724.63 and 9,739.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,191.50 : 23,724.63 = 9,739.50 : x
2. Step 2: Convert to fraction form
   17,191.50/23,724.63 = 9,739.50/x
3. Step 3: Cross multiply
   17,191.50x = 23,724.63 × 9,739.50
4. Step 4: Simplify right side
   17,191.50x = 231,066,033.89
5. Step 5: Solve for x
   x = 231,066,033.89/17,191.50
6. Step 6: Final answer
   x = 13,440.71