Finding the Fourth Proportional to 22,448.01, 30,979.61 and 12,378.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,448.01 : 30,979.61 = 12,378.69 : x
2. Step 2: Convert to fraction form
   22,448.01/30,979.61 = 12,378.69/x
3. Step 3: Cross multiply
   22,448.01x = 30,979.61 × 12,378.69
4. Step 4: Simplify right side
   22,448.01x = 383,486,926.62
5. Step 5: Solve for x
   x = 383,486,926.62/22,448.01
6. Step 6: Final answer
   x = 17,083.34