Finding the Fourth Proportional to 22,450.05, 30,981.29 and 12,378.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,450.05 : 30,981.29 = 12,378.89 : x
2. Step 2: Convert to fraction form
   22,450.05/30,981.29 = 12,378.89/x
3. Step 3: Cross multiply
   22,450.05x = 30,981.29 × 12,378.89
4. Step 4: Simplify right side
   22,450.05x = 383,513,996.53
5. Step 5: Solve for x
   x = 383,513,996.53/22,450.05
6. Step 6: Final answer
   x = 17,082.99