Finding the Fourth Proportional to 22,256.80, 30,714.39 and 12,185.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,256.80 : 30,714.39 = 12,185.89 : x
2. Step 2: Convert to fraction form
   22,256.80/30,714.39 = 12,185.89/x
3. Step 3: Cross multiply
   22,256.80x = 30,714.39 × 12,185.89
4. Step 4: Simplify right side
   22,256.80x = 374,282,055.47
5. Step 5: Solve for x
   x = 374,282,055.47/22,256.80
6. Step 6: Final answer
   x = 16,816.53