Finding the Fourth Proportional to 12,578.30, 17,359.56 and 7,202.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,578.30 : 17,359.56 = 7,202.73 : x
2. Step 2: Convert to fraction form
   12,578.30/17,359.56 = 7,202.73/x
3. Step 3: Cross multiply
   12,578.30x = 17,359.56 × 7,202.73
4. Step 4: Simplify right side
   12,578.30x = 125,036,223.60
5. Step 5: Solve for x
   x = 125,036,223.60/12,578.30
6. Step 6: Final answer
   x = 9,940.63