Finding the Fourth Proportional to 16,729.43, 23,091.55 and 9,660.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,729.43 : 23,091.55 = 9,660.56 : x
2. Step 2: Convert to fraction form
   16,729.43/23,091.55 = 9,660.56/x
3. Step 3: Cross multiply
   16,729.43x = 23,091.55 × 9,660.56
4. Step 4: Simplify right side
   16,729.43x = 223,077,164.66
5. Step 5: Solve for x
   x = 223,077,164.66/16,729.43
6. Step 6: Final answer
   x = 13,334.42