Finding the Fourth Proportional to 3,892.71, 5,371.98 and 2,124.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.71 : 5,371.98 = 2,124.33 : x
2. Step 2: Convert to fraction form
   3,892.71/5,371.98 = 2,124.33/x
3. Step 3: Cross multiply
   3,892.71x = 5,371.98 × 2,124.33
4. Step 4: Simplify right side
   3,892.71x = 11,411,858.27
5. Step 5: Solve for x
   x = 11,411,858.27/3,892.71
6. Step 6: Final answer
   x = 2,931.60