Finding the Fourth Proportional to 22,448.69, 30,981.03 and 12,379.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,448.69 : 30,981.03 = 12,379.10 : x
2. Step 2: Convert to fraction form
   22,448.69/30,981.03 = 12,379.10/x
3. Step 3: Cross multiply
   22,448.69x = 30,981.03 × 12,379.10
4. Step 4: Simplify right side
   22,448.69x = 383,517,268.47
5. Step 5: Solve for x
   x = 383,517,268.47/22,448.69
6. Step 6: Final answer
   x = 17,084.18