Finding the Fourth Proportional to 8,290.56, 12,418.56 and 3,676.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,290.56 : 12,418.56 = 3,676.80 : x
2. Step 2: Convert to fraction form
   8,290.56/12,418.56 = 3,676.80/x
3. Step 3: Cross multiply
   8,290.56x = 12,418.56 × 3,676.80
4. Step 4: Simplify right side
   8,290.56x = 45,660,561.41
5. Step 5: Solve for x
   x = 45,660,561.41/8,290.56
6. Step 6: Final answer
   x = 5,507.54