Finding the Fourth Proportional to 22,340.64, 30,828.72 and 12,267.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,340.64 : 30,828.72 = 12,267.12 : x
2. Step 2: Convert to fraction form
   22,340.64/30,828.72 = 12,267.12/x
3. Step 3: Cross multiply
   22,340.64x = 30,828.72 × 12,267.12
4. Step 4: Simplify right side
   22,340.64x = 378,179,607.69
5. Step 5: Solve for x
   x = 378,179,607.69/22,340.64
6. Step 6: Final answer
   x = 16,927.88