Finding the Fourth Proportional to 10,812.30, 16,212.69 and 3,413.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,812.30 : 16,212.69 = 3,413.58 : x
2. Step 2: Convert to fraction form
   10,812.30/16,212.69 = 3,413.58/x
3. Step 3: Cross multiply
   10,812.30x = 16,212.69 × 3,413.58
4. Step 4: Simplify right side
   10,812.30x = 55,343,314.33
5. Step 5: Solve for x
   x = 55,343,314.33/10,812.30
6. Step 6: Final answer
   x = 5,118.55