Finding the Fourth Proportional to 3,978,912.73, 5,491,481.05 and 2,236,725.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978,912.73 : 5,491,481.05 = 2,236,725.61 : x
2. Step 2: Convert to fraction form
   3,978,912.73/5,491,481.05 = 2,236,725.61/x
3. Step 3: Cross multiply
   3,978,912.73x = 5,491,481.05 × 2,236,725.61
4. Step 4: Simplify right side
   3,978,912.73x = 12,282,936,327,612.27
5. Step 5: Solve for x
   x = 12,282,936,327,612.27/3,978,912.73
6. Step 6: Final answer
   x = 3,087,008.23