Finding the Fourth Proportional to 8,513.48, 12,757.20 and 3,580.41

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513.48 : 12,757.20 = 3,580.41 : x
2. Step 2: Convert to fraction form
   8,513.48/12,757.20 = 3,580.41/x
3. Step 3: Cross multiply
   8,513.48x = 12,757.20 × 3,580.41
4. Step 4: Simplify right side
   8,513.48x = 45,676,006.45
5. Step 5: Solve for x
   x = 45,676,006.45/8,513.48
6. Step 6: Final answer
   x = 5,365.14