Finding the Fourth Proportional to 4,932.28, 7,383.79 and 2,978.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,932.28 : 7,383.79 = 2,978.56 : x
2. Step 2: Convert to fraction form
   4,932.28/7,383.79 = 2,978.56/x
3. Step 3: Cross multiply
   4,932.28x = 7,383.79 × 2,978.56
4. Step 4: Simplify right side
   4,932.28x = 21,993,061.54
5. Step 5: Solve for x
   x = 21,993,061.54/4,932.28
6. Step 6: Final answer
   x = 4,459.01