Finding the Fourth Proportional to 22,342.12, 30,830.90 and 12,271.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,342.12 : 30,830.90 = 12,271.88 : x
2. Step 2: Convert to fraction form
   22,342.12/30,830.90 = 12,271.88/x
3. Step 3: Cross multiply
   22,342.12x = 30,830.90 × 12,271.88
4. Step 4: Simplify right side
   22,342.12x = 378,353,105.09
5. Step 5: Solve for x
   x = 378,353,105.09/22,342.12
6. Step 6: Final answer
   x = 16,934.52