Finding the Fourth Proportional to 22,066.96, 30,427.68 and 20,667.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,066.96 : 30,427.68 = 20,667.28 : x
2. Step 2: Convert to fraction form
   22,066.96/30,427.68 = 20,667.28/x
3. Step 3: Cross multiply
   22,066.96x = 30,427.68 × 20,667.28
4. Step 4: Simplify right side
   22,066.96x = 628,857,382.31
5. Step 5: Solve for x
   x = 628,857,382.31/22,066.96
6. Step 6: Final answer
   x = 28,497.69