Finding the Fourth Proportional to 22,448.80, 30,980.72 and 12,377.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,448.80 : 30,980.72 = 12,377.21 : x
2. Step 2: Convert to fraction form
   22,448.80/30,980.72 = 12,377.21/x
3. Step 3: Cross multiply
   22,448.80x = 30,980.72 × 12,377.21
4. Step 4: Simplify right side
   22,448.80x = 383,454,985.79
5. Step 5: Solve for x
   x = 383,454,985.79/22,448.80
6. Step 6: Final answer
   x = 17,081.32