Finding the Fourth Proportional to 8,581.24, 12,860.34 and 3,385.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,581.24 : 12,860.34 = 3,385.72 : x
2. Step 2: Convert to fraction form
   8,581.24/12,860.34 = 3,385.72/x
3. Step 3: Cross multiply
   8,581.24x = 12,860.34 × 3,385.72
4. Step 4: Simplify right side
   8,581.24x = 43,541,510.34
5. Step 5: Solve for x
   x = 43,541,510.34/8,581.24
6. Step 6: Final answer
   x = 5,074.03