Finding the Fourth Proportional to 12,031.22, 18,042.32 and 4,131.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,031.22 : 18,042.32 = 4,131.49 : x
2. Step 2: Convert to fraction form
   12,031.22/18,042.32 = 4,131.49/x
3. Step 3: Cross multiply
   12,031.22x = 18,042.32 × 4,131.49
4. Step 4: Simplify right side
   12,031.22x = 74,541,629.88
5. Step 5: Solve for x
   x = 74,541,629.88/12,031.22
6. Step 6: Final answer
   x = 6,195.69