Finding the Fourth Proportional to 3,892.76, 5,372.04 and 2,124.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.76 : 5,372.04 = 2,124.56 : x
2. Step 2: Convert to fraction form
   3,892.76/5,372.04 = 2,124.56/x
3. Step 3: Cross multiply
   3,892.76x = 5,372.04 × 2,124.56
4. Step 4: Simplify right side
   3,892.76x = 11,413,221.30
5. Step 5: Solve for x
   x = 11,413,221.30/3,892.76
6. Step 6: Final answer
   x = 2,931.91