Finding the Fourth Proportional to 12,321.73, 17,005.24 and 7,287.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321.73 : 17,005.24 = 7,287.58 : x
2. Step 2: Convert to fraction form
   12,321.73/17,005.24 = 7,287.58/x
3. Step 3: Cross multiply
   12,321.73x = 17,005.24 × 7,287.58
4. Step 4: Simplify right side
   12,321.73x = 123,927,046.92
5. Step 5: Solve for x
   x = 123,927,046.92/12,321.73
6. Step 6: Final answer
   x = 10,057.60