Finding the Fourth Proportional to 8,513.98, 12,757.94 and 3,580.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513.98 : 12,757.94 = 3,580.92 : x
2. Step 2: Convert to fraction form
   8,513.98/12,757.94 = 3,580.92/x
3. Step 3: Cross multiply
   8,513.98x = 12,757.94 × 3,580.92
4. Step 4: Simplify right side
   8,513.98x = 45,685,162.50
5. Step 5: Solve for x
   x = 45,685,162.50/8,513.98
6. Step 6: Final answer
   x = 5,365.90