Finding the Fourth Proportional to 8,131.67, 12,197.30 and 3,749.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.67 : 12,197.30 = 3,749.12 : x
2. Step 2: Convert to fraction form
   8,131.67/12,197.30 = 3,749.12/x
3. Step 3: Cross multiply
   8,131.67x = 12,197.30 × 3,749.12
4. Step 4: Simplify right side
   8,131.67x = 45,729,061.64
5. Step 5: Solve for x
   x = 45,729,061.64/8,131.67
6. Step 6: Final answer
   x = 5,623.58