Finding the Fourth Proportional to 16,789.64, 23,169.71 and 9,716.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,789.64 : 23,169.71 = 9,716.18 : x
2. Step 2: Convert to fraction form
   16,789.64/23,169.71 = 9,716.18/x
3. Step 3: Cross multiply
   16,789.64x = 23,169.71 × 9,716.18
4. Step 4: Simplify right side
   16,789.64x = 225,120,981.35
5. Step 5: Solve for x
   x = 225,120,981.35/16,789.64
6. Step 6: Final answer
   x = 13,408.33