Finding the Fourth Proportional to 6,309,399.89, 8,706,978.02 and 3,408,793.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,309,399.89 : 8,706,978.02 = 3,408,793.08 : x
2. Step 2: Convert to fraction form
   6,309,399.89/8,706,978.02 = 3,408,793.08/x
3. Step 3: Cross multiply
   6,309,399.89x = 8,706,978.02 × 3,408,793.08
4. Step 4: Simplify right side
   6,309,399.89x = 29,680,286,422,288.10
5. Step 5: Solve for x
   x = 29,680,286,422,288.10/6,309,399.89
6. Step 6: Final answer
   x = 4,704,137.78