Finding the Fourth Proportional to 16,728.42, 23,085.36 and 9,653.43

Step by Step Solution

1. Step 1: Write the proportion equation
   16,728.42 : 23,085.36 = 9,653.43 : x
2. Step 2: Convert to fraction form
   16,728.42/23,085.36 = 9,653.43/x
3. Step 3: Cross multiply
   16,728.42x = 23,085.36 × 9,653.43
4. Step 4: Simplify right side
   16,728.42x = 222,852,906.78
5. Step 5: Solve for x
   x = 222,852,906.78/16,728.42
6. Step 6: Final answer
   x = 13,321.81