Finding the Fourth Proportional to 3,964,231.47, 5,470,789.55 and 2,221,932.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964,231.47 : 5,470,789.55 = 2,221,932.78 : x
2. Step 2: Convert to fraction form
   3,964,231.47/5,470,789.55 = 2,221,932.78/x
3. Step 3: Cross multiply
   3,964,231.47x = 5,470,789.55 × 2,221,932.78
4. Step 4: Simplify right side
   3,964,231.47x = 12,155,726,633,626.45
5. Step 5: Solve for x
   x = 12,155,726,633,626.45/3,964,231.47
6. Step 6: Final answer
   x = 3,066,351.38