Finding the Fourth Proportional to 8,144.64, 12,222.45 and 3,981.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,144.64 : 12,222.45 = 3,981.15 : x
2. Step 2: Convert to fraction form
   8,144.64/12,222.45 = 3,981.15/x
3. Step 3: Cross multiply
   8,144.64x = 12,222.45 × 3,981.15
4. Step 4: Simplify right side
   8,144.64x = 48,659,406.82
5. Step 5: Solve for x
   x = 48,659,406.82/8,144.64
6. Step 6: Final answer
   x = 5,974.41