Finding the Fourth Proportional to 3,892.27, 5,371.32 and 2,123.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.27 : 5,371.32 = 2,123.89 : x
2. Step 2: Convert to fraction form
   3,892.27/5,371.32 = 2,123.89/x
3. Step 3: Cross multiply
   3,892.27x = 5,371.32 × 2,123.89
4. Step 4: Simplify right side
   3,892.27x = 11,408,092.83
5. Step 5: Solve for x
   x = 11,408,092.83/3,892.27
6. Step 6: Final answer
   x = 2,930.96