Finding the Fourth Proportional to 3,964,290.18, 5,470,870.82 and 2,221,991.77

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964,290.18 : 5,470,870.82 = 2,221,991.77 : x
2. Step 2: Convert to fraction form
   3,964,290.18/5,470,870.82 = 2,221,991.77/x
3. Step 3: Cross multiply
   3,964,290.18x = 5,470,870.82 × 2,221,991.77
4. Step 4: Simplify right side
   3,964,290.18x = 12,156,229,910,988.42
5. Step 5: Solve for x
   x = 12,156,229,910,988.42/3,964,290.18
6. Step 6: Final answer
   x = 3,066,432.92