Finding the Fourth Proportional to 10,413.50, 15,621.86 and 3,486.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,413.50 : 15,621.86 = 3,486.38 : x
2. Step 2: Convert to fraction form
   10,413.50/15,621.86 = 3,486.38/x
3. Step 3: Cross multiply
   10,413.50x = 15,621.86 × 3,486.38
4. Step 4: Simplify right side
   10,413.50x = 54,463,670.87
5. Step 5: Solve for x
   x = 54,463,670.87/10,413.50
6. Step 6: Final answer
   x = 5,230.10