Finding the Fourth Proportional to 3,892.55, 5,371.75 and 2,124.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.55 : 5,371.75 = 2,124.18 : x
2. Step 2: Convert to fraction form
   3,892.55/5,371.75 = 2,124.18/x
3. Step 3: Cross multiply
   3,892.55x = 5,371.75 × 2,124.18
4. Step 4: Simplify right side
   3,892.55x = 11,410,566.57
5. Step 5: Solve for x
   x = 11,410,566.57/3,892.55
6. Step 6: Final answer
   x = 2,931.39