Finding the Fourth Proportional to 23,488.72, 32,413.20 and 13,415.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,488.72 : 32,413.20 = 13,415.18 : x
2. Step 2: Convert to fraction form
   23,488.72/32,413.20 = 13,415.18/x
3. Step 3: Cross multiply
   23,488.72x = 32,413.20 × 13,415.18
4. Step 4: Simplify right side
   23,488.72x = 434,828,912.38
5. Step 5: Solve for x
   x = 434,828,912.38/23,488.72
6. Step 6: Final answer
   x = 18,512.24