Finding the Fourth Proportional to 22,142.28, 30,688.23 and 21,727.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,142.28 : 30,688.23 = 21,727.56 : x
2. Step 2: Convert to fraction form
   22,142.28/30,688.23 = 21,727.56/x
3. Step 3: Cross multiply
   22,142.28x = 30,688.23 × 21,727.56
4. Step 4: Simplify right side
   22,142.28x = 666,780,358.62
5. Step 5: Solve for x
   x = 666,780,358.62/22,142.28
6. Step 6: Final answer
   x = 30,113.45