Finding the Fourth Proportional to 8,564.10, 12,847.98 and 2,721.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,564.10 : 12,847.98 = 2,721.12 : x
2. Step 2: Convert to fraction form
   8,564.10/12,847.98 = 2,721.12/x
3. Step 3: Cross multiply
   8,564.10x = 12,847.98 × 2,721.12
4. Step 4: Simplify right side
   8,564.10x = 34,960,895.34
5. Step 5: Solve for x
   x = 34,960,895.34/8,564.10
6. Step 6: Final answer
   x = 4,082.26