Finding the Fourth Proportional to 8,109.18, 12,162.60 and 2,561.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.18 : 12,162.60 = 2,561.04 : x
2. Step 2: Convert to fraction form
   8,109.18/12,162.60 = 2,561.04/x
3. Step 3: Cross multiply
   8,109.18x = 12,162.60 × 2,561.04
4. Step 4: Simplify right side
   8,109.18x = 31,148,905.10
5. Step 5: Solve for x
   x = 31,148,905.10/8,109.18
6. Step 6: Final answer
   x = 3,841.19