Finding the Fourth Proportional to 3,892.42, 5,371.57 and 2,124.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.42 : 5,371.57 = 2,124.04 : x
2. Step 2: Convert to fraction form
   3,892.42/5,371.57 = 2,124.04/x
3. Step 3: Cross multiply
   3,892.42x = 5,371.57 × 2,124.04
4. Step 4: Simplify right side
   3,892.42x = 11,409,429.54
5. Step 5: Solve for x
   x = 11,409,429.54/3,892.42
6. Step 6: Final answer
   x = 2,931.19