Finding the Fourth Proportional to 16,685.36, 23,023.52 and 9,969.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,685.36 : 23,023.52 = 9,969.57 : x
2. Step 2: Convert to fraction form
   16,685.36/23,023.52 = 9,969.57/x
3. Step 3: Cross multiply
   16,685.36x = 23,023.52 × 9,969.57
4. Step 4: Simplify right side
   16,685.36x = 229,534,619.21
5. Step 5: Solve for x
   x = 229,534,619.21/16,685.36
6. Step 6: Final answer
   x = 13,756.65