Finding the Fourth Proportional to 12,828,165, 17,703,152.82 and 7,321,429.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,828,165 : 17,703,152.82 = 7,321,429.68 : x
2. Step 2: Convert to fraction form
   12,828,165/17,703,152.82 = 7,321,429.68/x
3. Step 3: Cross multiply
   12,828,165x = 17,703,152.82 × 7,321,429.68
4. Step 4: Simplify right side
   12,828,165x = 129,612,388,485,923.69
5. Step 5: Solve for x
   x = 129,612,388,485,923.69/12,828,165
6. Step 6: Final answer
   x = 10,103,735.69