Finding the Fourth Proportional to 8,279.40, 12,418.38 and 2,436.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,279.40 : 12,418.38 = 2,436.42 : x
2. Step 2: Convert to fraction form
   8,279.40/12,418.38 = 2,436.42/x
3. Step 3: Cross multiply
   8,279.40x = 12,418.38 × 2,436.42
4. Step 4: Simplify right side
   8,279.40x = 30,256,389.40
5. Step 5: Solve for x
   x = 30,256,389.40/8,279.40
6. Step 6: Final answer
   x = 3,654.42