Finding the Fourth Proportional to 8,131.85, 12,197.58 and 3,749.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.85 : 12,197.58 = 3,749.31 : x
2. Step 2: Convert to fraction form
   8,131.85/12,197.58 = 3,749.31/x
3. Step 3: Cross multiply
   8,131.85x = 12,197.58 × 3,749.31
4. Step 4: Simplify right side
   8,131.85x = 45,732,494.61
5. Step 5: Solve for x
   x = 45,732,494.61/8,131.85
6. Step 6: Final answer
   x = 5,623.87