Finding the Fourth Proportional to 12,772.73, 19,134.17 and 7,209.24

Step by Step Solution

1. Step 1: Write the proportion equation
   12,772.73 : 19,134.17 = 7,209.24 : x
2. Step 2: Convert to fraction form
   12,772.73/19,134.17 = 7,209.24/x
3. Step 3: Cross multiply
   12,772.73x = 19,134.17 × 7,209.24
4. Step 4: Simplify right side
   12,772.73x = 137,942,823.73
5. Step 5: Solve for x
   x = 137,942,823.73/12,772.73
6. Step 6: Final answer
   x = 10,799.80