Finding the Fourth Proportional to 20,315.82, 30,471.30 and 9,222.06

Step by Step Solution

1. Step 1: Write the proportion equation
   20,315.82 : 30,471.30 = 9,222.06 : x
2. Step 2: Convert to fraction form
   20,315.82/30,471.30 = 9,222.06/x
3. Step 3: Cross multiply
   20,315.82x = 30,471.30 × 9,222.06
4. Step 4: Simplify right side
   20,315.82x = 281,008,156.88
5. Step 5: Solve for x
   x = 281,008,156.88/20,315.82
6. Step 6: Final answer
   x = 13,831.99