Finding the Fourth Proportional to 21,314.48, 29,413.40 and 12,361.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,314.48 : 29,413.40 = 12,361.41 : x
2. Step 2: Convert to fraction form
   21,314.48/29,413.40 = 12,361.41/x
3. Step 3: Cross multiply
   21,314.48x = 29,413.40 × 12,361.41
4. Step 4: Simplify right side
   21,314.48x = 363,591,096.89
5. Step 5: Solve for x
   x = 363,591,096.89/21,314.48
6. Step 6: Final answer
   x = 17,058.41