Finding the Fourth Proportional to 16,978,659, 25,451,978.58 and 8,450,933.64

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978,659 : 25,451,978.58 = 8,450,933.64 : x
2. Step 2: Convert to fraction form
   16,978,659/25,451,978.58 = 8,450,933.64/x
3. Step 3: Cross multiply
   16,978,659x = 25,451,978.58 × 8,450,933.64
4. Step 4: Simplify right side
   16,978,659x = 215,092,981,986,281.44
5. Step 5: Solve for x
   x = 215,092,981,986,281.44/16,978,659
6. Step 6: Final answer
   x = 12,668,431.71