Finding the Fourth Proportional to 8,131.74, 12,190.41 and 3,512.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.74 : 12,190.41 = 3,512.22 : x
2. Step 2: Convert to fraction form
   8,131.74/12,190.41 = 3,512.22/x
3. Step 3: Cross multiply
   8,131.74x = 12,190.41 × 3,512.22
4. Step 4: Simplify right side
   8,131.74x = 42,815,401.81
5. Step 5: Solve for x
   x = 42,815,401.81/8,131.74
6. Step 6: Final answer
   x = 5,265.22