Finding the Fourth Proportional to 8,128.27, 12,192.83 and 2,582.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.27 : 12,192.83 = 2,582.05 : x
2. Step 2: Convert to fraction form
   8,128.27/12,192.83 = 2,582.05/x
3. Step 3: Cross multiply
   8,128.27x = 12,192.83 × 2,582.05
4. Step 4: Simplify right side
   8,128.27x = 31,482,496.70
5. Step 5: Solve for x
   x = 31,482,496.70/8,128.27
6. Step 6: Final answer
   x = 3,873.21