Finding the Fourth Proportional to 6,499,162, 8,969,151.60 and 3,920,787.40

Step by Step Solution

1. Step 1: Write the proportion equation
   6,499,162 : 8,969,151.60 = 3,920,787.40 : x
2. Step 2: Convert to fraction form
   6,499,162/8,969,151.60 = 3,920,787.40/x
3. Step 3: Cross multiply
   6,499,162x = 8,969,151.60 × 3,920,787.40
4. Step 4: Simplify right side
   6,499,162x = 35,166,136,581,969.84
5. Step 5: Solve for x
   x = 35,166,136,581,969.84/6,499,162
6. Step 6: Final answer
   x = 5,410,872.45