Finding the Fourth Proportional to 16,685.52, 23,028.84 and 9,616.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,685.52 : 23,028.84 = 9,616.05 : x
2. Step 2: Convert to fraction form
   16,685.52/23,028.84 = 9,616.05/x
3. Step 3: Cross multiply
   16,685.52x = 23,028.84 × 9,616.05
4. Step 4: Simplify right side
   16,685.52x = 221,446,476.88
5. Step 5: Solve for x
   x = 221,446,476.88/16,685.52
6. Step 6: Final answer
   x = 13,271.78