Finding the Fourth Proportional to 22,147.92, 30,566.88 and 12,716.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,147.92 : 30,566.88 = 12,716.28 : x
2. Step 2: Convert to fraction form
   22,147.92/30,566.88 = 12,716.28/x
3. Step 3: Cross multiply
   22,147.92x = 30,566.88 × 12,716.28
4. Step 4: Simplify right side
   22,147.92x = 388,697,004.81
5. Step 5: Solve for x
   x = 388,697,004.81/22,147.92
6. Step 6: Final answer
   x = 17,550.05