Finding the Fourth Proportional to 16,793.52, 23,173.74 and 9,720.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,793.52 : 23,173.74 = 9,720.42 : x
2. Step 2: Convert to fraction form
   16,793.52/23,173.74 = 9,720.42/x
3. Step 3: Cross multiply
   16,793.52x = 23,173.74 × 9,720.42
4. Step 4: Simplify right side
   16,793.52x = 225,258,485.77
5. Step 5: Solve for x
   x = 225,258,485.77/16,793.52
6. Step 6: Final answer
   x = 13,413.42