Finding the Fourth Proportional to 3,892.42, 5,371.51 and 2,124.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.42 : 5,371.51 = 2,124.10 : x
2. Step 2: Convert to fraction form
   3,892.42/5,371.51 = 2,124.10/x
3. Step 3: Cross multiply
   3,892.42x = 5,371.51 × 2,124.10
4. Step 4: Simplify right side
   3,892.42x = 11,409,624.39
5. Step 5: Solve for x
   x = 11,409,624.39/3,892.42
6. Step 6: Final answer
   x = 2,931.24