Finding the Fourth Proportional to 17,728.55, 24,465.40 and 9,662.21

Step by Step Solution

1. Step 1: Write the proportion equation
   17,728.55 : 24,465.40 = 9,662.21 : x
2. Step 2: Convert to fraction form
   17,728.55/24,465.40 = 9,662.21/x
3. Step 3: Cross multiply
   17,728.55x = 24,465.40 × 9,662.21
4. Step 4: Simplify right side
   17,728.55x = 236,389,832.53
5. Step 5: Solve for x
   x = 236,389,832.53/17,728.55
6. Step 6: Final answer
   x = 13,333.85