Finding the Fourth Proportional to 12,879, 17,773.02 and 7,844.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,879 : 17,773.02 = 7,844.04 : x
2. Step 2: Convert to fraction form
   12,879/17,773.02 = 7,844.04/x
3. Step 3: Cross multiply
   12,879x = 17,773.02 × 7,844.04
4. Step 4: Simplify right side
   12,879x = 139,412,279.80
5. Step 5: Solve for x
   x = 139,412,279.80/12,879
6. Step 6: Final answer
   x = 10,824.78