Finding the Fourth Proportional to 3,727.62, 5,144.31 and 2,112.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,727.62 : 5,144.31 = 2,112.57 : x
2. Step 2: Convert to fraction form
   3,727.62/5,144.31 = 2,112.57/x
3. Step 3: Cross multiply
   3,727.62x = 5,144.31 × 2,112.57
4. Step 4: Simplify right side
   3,727.62x = 10,867,714.98
5. Step 5: Solve for x
   x = 10,867,714.98/3,727.62
6. Step 6: Final answer
   x = 2,915.46