Finding the Fourth Proportional to 17,685.82, 24,406.61 and 9,728.11

Step by Step Solution

1. Step 1: Write the proportion equation
   17,685.82 : 24,406.61 = 9,728.11 : x
2. Step 2: Convert to fraction form
   17,685.82/24,406.61 = 9,728.11/x
3. Step 3: Cross multiply
   17,685.82x = 24,406.61 × 9,728.11
4. Step 4: Simplify right side
   17,685.82x = 237,430,186.81
5. Step 5: Solve for x
   x = 237,430,186.81/17,685.82
6. Step 6: Final answer
   x = 13,424.89