Finding the Fourth Proportional to 8,298.25, 12,447.42 and 2,142.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,298.25 : 12,447.42 = 2,142.25 : x
2. Step 2: Convert to fraction form
   8,298.25/12,447.42 = 2,142.25/x
3. Step 3: Cross multiply
   8,298.25x = 12,447.42 × 2,142.25
4. Step 4: Simplify right side
   8,298.25x = 26,665,485.50
5. Step 5: Solve for x
   x = 26,665,485.50/8,298.25
6. Step 6: Final answer
   x = 3,213.39