Finding the Fourth Proportional to 8,109.56, 12,165.30 and 2,842.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.56 : 12,165.30 = 2,842.96 : x
2. Step 2: Convert to fraction form
   8,109.56/12,165.30 = 2,842.96/x
3. Step 3: Cross multiply
   8,109.56x = 12,165.30 × 2,842.96
4. Step 4: Simplify right side
   8,109.56x = 34,585,461.29
5. Step 5: Solve for x
   x = 34,585,461.29/8,109.56
6. Step 6: Final answer
   x = 4,264.78