Finding the Fourth Proportional to 16,344, 22,554.72 and 9,720

Step by Step Solution

1. Step 1: Write the proportion equation
   16,344 : 22,554.72 = 9,720 : x
2. Step 2: Convert to fraction form
   16,344/22,554.72 = 9,720/x
3. Step 3: Cross multiply
   16,344x = 22,554.72 × 9,720
4. Step 4: Simplify right side
   16,344x = 219,231,878.40
5. Step 5: Solve for x
   x = 219,231,878.40/16,344
6. Step 6: Final answer
   x = 13,413.60