Finding the Fourth Proportional to 20,716.56, 31,084.56 and 10,329.12

Step by Step Solution

1. Step 1: Write the proportion equation
   20,716.56 : 31,084.56 = 10,329.12 : x
2. Step 2: Convert to fraction form
   20,716.56/31,084.56 = 10,329.12/x
3. Step 3: Cross multiply
   20,716.56x = 31,084.56 × 10,329.12
4. Step 4: Simplify right side
   20,716.56x = 321,076,150.39
5. Step 5: Solve for x
   x = 321,076,150.39/20,716.56
6. Step 6: Final answer
   x = 15,498.53