Finding the Fourth Proportional to 21,522.16, 32,260.15 and 10,413.55

Step by Step Solution

1. Step 1: Write the proportion equation
   21,522.16 : 32,260.15 = 10,413.55 : x
2. Step 2: Convert to fraction form
   21,522.16/32,260.15 = 10,413.55/x
3. Step 3: Cross multiply
   21,522.16x = 32,260.15 × 10,413.55
4. Step 4: Simplify right side
   21,522.16x = 335,942,685.03
5. Step 5: Solve for x
   x = 335,942,685.03/21,522.16
6. Step 6: Final answer
   x = 15,609.15