Finding the Fourth Proportional to 12,721.50, 17,553.83 and 7,056.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,721.50 : 17,553.83 = 7,056.27 : x
2. Step 2: Convert to fraction form
   12,721.50/17,553.83 = 7,056.27/x
3. Step 3: Cross multiply
   12,721.50x = 17,553.83 × 7,056.27
4. Step 4: Simplify right side
   12,721.50x = 123,864,528.73
5. Step 5: Solve for x
   x = 123,864,528.73/12,721.50
6. Step 6: Final answer
   x = 9,736.63