Finding the Fourth Proportional to 22,341.12, 30,830.79 and 12,270.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,341.12 : 30,830.79 = 12,270.21 : x
2. Step 2: Convert to fraction form
   22,341.12/30,830.79 = 12,270.21/x
3. Step 3: Cross multiply
   22,341.12x = 30,830.79 × 12,270.21
4. Step 4: Simplify right side
   22,341.12x = 378,300,267.77
5. Step 5: Solve for x
   x = 378,300,267.77/22,341.12
6. Step 6: Final answer
   x = 16,932.91