Finding the Fourth Proportional to 12,788,355.27, 17,647,721.73 and 6,987,012.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788,355.27 : 17,647,721.73 = 6,987,012.15 : x
2. Step 2: Convert to fraction form
   12,788,355.27/17,647,721.73 = 6,987,012.15/x
3. Step 3: Cross multiply
   12,788,355.27x = 17,647,721.73 × 6,987,012.15
4. Step 4: Simplify right side
   12,788,355.27x = 123,304,846,147,329.03
5. Step 5: Solve for x
   x = 123,304,846,147,329.03/12,788,355.27
6. Step 6: Final answer
   x = 9,641,962.83