Finding the Fourth Proportional to 22,142.88, 30,557.52 and 12,206.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,142.88 : 30,557.52 = 12,206.88 : x
2. Step 2: Convert to fraction form
   22,142.88/30,557.52 = 12,206.88/x
3. Step 3: Cross multiply
   22,142.88x = 30,557.52 × 12,206.88
4. Step 4: Simplify right side
   22,142.88x = 373,011,979.74
5. Step 5: Solve for x
   x = 373,011,979.74/22,142.88
6. Step 6: Final answer
   x = 16,845.68