Finding the Fourth Proportional to 22,256.88, 30,714.86 and 12,185.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,256.88 : 30,714.86 = 12,185.15 : x
2. Step 2: Convert to fraction form
   22,256.88/30,714.86 = 12,185.15/x
3. Step 3: Cross multiply
   22,256.88x = 30,714.86 × 12,185.15
4. Step 4: Simplify right side
   22,256.88x = 374,265,115.40
5. Step 5: Solve for x
   x = 374,265,115.40/22,256.88
6. Step 6: Final answer
   x = 16,815.70