Finding the Fourth Proportional to 22,231.82, 30,680.89 and 12,803.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,231.82 : 30,680.89 = 12,803.42 : x
2. Step 2: Convert to fraction form
   22,231.82/30,680.89 = 12,803.42/x
3. Step 3: Cross multiply
   22,231.82x = 30,680.89 × 12,803.42
4. Step 4: Simplify right side
   22,231.82x = 392,820,135.23
5. Step 5: Solve for x
   x = 392,820,135.23/22,231.82
6. Step 6: Final answer
   x = 17,669.28