Finding the Fourth Proportional to 12,031.15, 18,042.23 and 4,131.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,031.15 : 18,042.23 = 4,131.42 : x
2. Step 2: Convert to fraction form
   12,031.15/18,042.23 = 4,131.42/x
3. Step 3: Cross multiply
   12,031.15x = 18,042.23 × 4,131.42
4. Step 4: Simplify right side
   12,031.15x = 74,540,029.87
5. Step 5: Solve for x
   x = 74,540,029.87/12,031.15
6. Step 6: Final answer
   x = 6,195.59