Finding the Fourth Proportional to 4,978.22, 7,470.16 and 2,204.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.22 : 7,470.16 = 2,204.78 : x
2. Step 2: Convert to fraction form
   4,978.22/7,470.16 = 2,204.78/x
3. Step 3: Cross multiply
   4,978.22x = 7,470.16 × 2,204.78
4. Step 4: Simplify right side
   4,978.22x = 16,470,059.36
5. Step 5: Solve for x
   x = 16,470,059.36/4,978.22
6. Step 6: Final answer
   x = 3,308.42