Finding the Fourth Proportional to 12,277,724.05, 18,413,443.61 and 3,639,804.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,277,724.05 : 18,413,443.61 = 3,639,804.55 : x
2. Step 2: Convert to fraction form
   12,277,724.05/18,413,443.61 = 3,639,804.55/x
3. Step 3: Cross multiply
   12,277,724.05x = 18,413,443.61 × 3,639,804.55
4. Step 4: Simplify right side
   12,277,724.05x = 67,021,335,832,846.42
5. Step 5: Solve for x
   x = 67,021,335,832,846.42/12,277,724.05
6. Step 6: Final answer
   x = 5,458,775.22