Finding the Fourth Proportional to 12,788,357.52, 17,647,724.82 and 6,987,014.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,788,357.52 : 17,647,724.82 = 6,987,014.40 : x
2. Step 2: Convert to fraction form
   12,788,357.52/17,647,724.82 = 6,987,014.40/x
3. Step 3: Cross multiply
   12,788,357.52x = 17,647,724.82 × 6,987,014.40
4. Step 4: Simplify right side
   12,788,357.52x = 123,304,907,444,577.42
5. Step 5: Solve for x
   x = 123,304,907,444,577.42/12,788,357.52
6. Step 6: Final answer
   x = 9,641,965.93