Finding the Fourth Proportional to 12,282.56, 18,408.43 and 5,254.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,282.56 : 18,408.43 = 5,254.31 : x
2. Step 2: Convert to fraction form
   12,282.56/18,408.43 = 5,254.31/x
3. Step 3: Cross multiply
   12,282.56x = 18,408.43 × 5,254.31
4. Step 4: Simplify right side
   12,282.56x = 96,723,571.56
5. Step 5: Solve for x
   x = 96,723,571.56/12,282.56
6. Step 6: Final answer
   x = 7,874.87