Finding the Fourth Proportional to 8,131.42, 12,197.72 and 3,974.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.42 : 12,197.72 = 3,974.89 : x
2. Step 2: Convert to fraction form
   8,131.42/12,197.72 = 3,974.89/x
3. Step 3: Cross multiply
   8,131.42x = 12,197.72 × 3,974.89
4. Step 4: Simplify right side
   8,131.42x = 48,484,595.25
5. Step 5: Solve for x
   x = 48,484,595.25/8,131.42
6. Step 6: Final answer
   x = 5,962.62