Finding the Fourth Proportional to 3,892.38, 5,371.41 and 2,123.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.38 : 5,371.41 = 2,123.98 : x
2. Step 2: Convert to fraction form
   3,892.38/5,371.41 = 2,123.98/x
3. Step 3: Cross multiply
   3,892.38x = 5,371.41 × 2,123.98
4. Step 4: Simplify right side
   3,892.38x = 11,408,767.41
5. Step 5: Solve for x
   x = 11,408,767.41/3,892.38
6. Step 6: Final answer
   x = 2,931.05