Finding the Fourth Proportional to 3,892.89, 5,372.32 and 2,124.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,892.89 : 5,372.32 = 2,124.60 : x
2. Step 2: Convert to fraction form
   3,892.89/5,372.32 = 2,124.60/x
3. Step 3: Cross multiply
   3,892.89x = 5,372.32 × 2,124.60
4. Step 4: Simplify right side
   3,892.89x = 11,414,031.07
5. Step 5: Solve for x
   x = 11,414,031.07/3,892.89
6. Step 6: Final answer
   x = 2,932.02