Finding the Fourth Proportional to 3,961.50, 5,940.20 and 2,112.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,961.50 : 5,940.20 = 2,112.12 : x
2. Step 2: Convert to fraction form
   3,961.50/5,940.20 = 2,112.12/x
3. Step 3: Cross multiply
   3,961.50x = 5,940.20 × 2,112.12
4. Step 4: Simplify right side
   3,961.50x = 12,546,404.66
5. Step 5: Solve for x
   x = 12,546,404.66/3,961.50
6. Step 6: Final answer
   x = 3,167.08