Finding the Fourth Proportional to 3,892.51, 5,371.56 and 2,124.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.51 : 5,371.56 = 2,124.12 : x
2. Step 2: Convert to fraction form
   3,892.51/5,371.56 = 2,124.12/x
3. Step 3: Cross multiply
   3,892.51x = 5,371.56 × 2,124.12
4. Step 4: Simplify right side
   3,892.51x = 11,409,838.03
5. Step 5: Solve for x
   x = 11,409,838.03/3,892.51
6. Step 6: Final answer
   x = 2,931.23