Finding the Fourth Proportional to 3,930.82, 5,424.56 and 2,162.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.82 : 5,424.56 = 2,162.45 : x
2. Step 2: Convert to fraction form
   3,930.82/5,424.56 = 2,162.45/x
3. Step 3: Cross multiply
   3,930.82x = 5,424.56 × 2,162.45
4. Step 4: Simplify right side
   3,930.82x = 11,730,339.77
5. Step 5: Solve for x
   x = 11,730,339.77/3,930.82
6. Step 6: Final answer
   x = 2,984.20