Finding the Fourth Proportional to 13,381.61, 18,466.78 and 7,413.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,381.61 : 18,466.78 = 7,413.37 : x
2. Step 2: Convert to fraction form
   13,381.61/18,466.78 = 7,413.37/x
3. Step 3: Cross multiply
   13,381.61x = 18,466.78 × 7,413.37
4. Step 4: Simplify right side
   13,381.61x = 136,901,008.15
5. Step 5: Solve for x
   x = 136,901,008.15/13,381.61
6. Step 6: Final answer
   x = 10,230.53