Finding the Fourth Proportional to 22,448.00, 30,979.55 and 12,378.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,448.00 : 30,979.55 = 12,378.59 : x
2. Step 2: Convert to fraction form
   22,448.00/30,979.55 = 12,378.59/x
3. Step 3: Cross multiply
   22,448.00x = 30,979.55 × 12,378.59
4. Step 4: Simplify right side
   22,448.00x = 383,482,931.04
5. Step 5: Solve for x
   x = 383,482,931.04/22,448.00
6. Step 6: Final answer
   x = 17,083.17