Finding the Fourth Proportional to 8,109.59, 12,165.05 and 2,563.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.59 : 12,165.05 = 2,563.25 : x
2. Step 2: Convert to fraction form
   8,109.59/12,165.05 = 2,563.25/x
3. Step 3: Cross multiply
   8,109.59x = 12,165.05 × 2,563.25
4. Step 4: Simplify right side
   8,109.59x = 31,182,064.41
5. Step 5: Solve for x
   x = 31,182,064.41/8,109.59
6. Step 6: Final answer
   x = 3,845.09