Finding the Fourth Proportional to 8,424.69, 12,638.37 and 2,802.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,424.69 : 12,638.37 = 2,802.56 : x
2. Step 2: Convert to fraction form
   8,424.69/12,638.37 = 2,802.56/x
3. Step 3: Cross multiply
   8,424.69x = 12,638.37 × 2,802.56
4. Step 4: Simplify right side
   8,424.69x = 35,419,727.04
5. Step 5: Solve for x
   x = 35,419,727.04/8,424.69
6. Step 6: Final answer
   x = 4,204.28