Finding the Fourth Proportional to 3,928,145.59, 5,420,216.33 and 2,208,934.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928,145.59 : 5,420,216.33 = 2,208,934.09 : x
2. Step 2: Convert to fraction form
   3,928,145.59/5,420,216.33 = 2,208,934.09/x
3. Step 3: Cross multiply
   3,928,145.59x = 5,420,216.33 × 2,208,934.09
4. Step 4: Simplify right side
   3,928,145.59x = 11,972,900,601,916.48
5. Step 5: Solve for x
   x = 11,972,900,601,916.48/3,928,145.59
6. Step 6: Final answer
   x = 3,047,977.81