Finding the Fourth Proportional to 8,608.90, 12,918.34 and 3,610.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,608.90 : 12,918.34 = 3,610.83 : x
2. Step 2: Convert to fraction form
   8,608.90/12,918.34 = 3,610.83/x
3. Step 3: Cross multiply
   8,608.90x = 12,918.34 × 3,610.83
4. Step 4: Simplify right side
   8,608.90x = 46,645,947.61
5. Step 5: Solve for x
   x = 46,645,947.61/8,608.90
6. Step 6: Final answer
   x = 5,418.34