Finding the Fourth Proportional to 3,930.37, 5,423.71 and 2,162.14

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.37 : 5,423.71 = 2,162.14 : x
2. Step 2: Convert to fraction form
   3,930.37/5,423.71 = 2,162.14/x
3. Step 3: Cross multiply
   3,930.37x = 5,423.71 × 2,162.14
4. Step 4: Simplify right side
   3,930.37x = 11,726,820.34
5. Step 5: Solve for x
   x = 11,726,820.34/3,930.37
6. Step 6: Final answer
   x = 2,983.64