Finding the Fourth Proportional to 22,235.78, 30,685.35 and 12,164.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,235.78 : 30,685.35 = 12,164.18 : x
2. Step 2: Convert to fraction form
   22,235.78/30,685.35 = 12,164.18/x
3. Step 3: Cross multiply
   22,235.78x = 30,685.35 × 12,164.18
4. Step 4: Simplify right side
   22,235.78x = 373,262,120.76
5. Step 5: Solve for x
   x = 373,262,120.76/22,235.78
6. Step 6: Final answer
   x = 16,786.55