Finding the Fourth Proportional to 8,405.57, 12,610.38 and 2,561.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,405.57 : 12,610.38 = 2,561.82 : x
2. Step 2: Convert to fraction form
   8,405.57/12,610.38 = 2,561.82/x
3. Step 3: Cross multiply
   8,405.57x = 12,610.38 × 2,561.82
4. Step 4: Simplify right side
   8,405.57x = 32,305,523.69
5. Step 5: Solve for x
   x = 32,305,523.69/8,405.57
6. Step 6: Final answer
   x = 3,843.35