Finding the Fourth Proportional to 22,308.62, 30,785.69 and 12,236.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,308.62 : 30,785.69 = 12,236.86 : x
2. Step 2: Convert to fraction form
   22,308.62/30,785.69 = 12,236.86/x
3. Step 3: Cross multiply
   22,308.62x = 30,785.69 × 12,236.86
4. Step 4: Simplify right side
   22,308.62x = 376,720,117.35
5. Step 5: Solve for x
   x = 376,720,117.35/22,308.62
6. Step 6: Final answer
   x = 16,886.75