Finding the Fourth Proportional to 21,162.54, 31,727.61 and 10,482.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,162.54 : 31,727.61 = 10,482.42 : x
2. Step 2: Convert to fraction form
   21,162.54/31,727.61 = 10,482.42/x
3. Step 3: Cross multiply
   21,162.54x = 31,727.61 × 10,482.42
4. Step 4: Simplify right side
   21,162.54x = 332,582,133.62
5. Step 5: Solve for x
   x = 332,582,133.62/21,162.54
6. Step 6: Final answer
   x = 15,715.61