Finding the Fourth Proportional to 20,316.68, 30,469.56 and 7,167.32

Step by Step Solution

1. Step 1: Write the proportion equation
   20,316.68 : 30,469.56 = 7,167.32 : x
2. Step 2: Convert to fraction form
   20,316.68/30,469.56 = 7,167.32/x
3. Step 3: Cross multiply
   20,316.68x = 30,469.56 × 7,167.32
4. Step 4: Simplify right side
   20,316.68x = 218,385,086.78
5. Step 5: Solve for x
   x = 218,385,086.78/20,316.68
6. Step 6: Final answer
   x = 10,749.05