Finding the Fourth Proportional to 22,311.81, 33,422.15 and 12,456.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,311.81 : 33,422.15 = 12,456.34 : x
2. Step 2: Convert to fraction form
   22,311.81/33,422.15 = 12,456.34/x
3. Step 3: Cross multiply
   22,311.81x = 33,422.15 × 12,456.34
4. Step 4: Simplify right side
   22,311.81x = 416,317,611.52
5. Step 5: Solve for x
   x = 416,317,611.52/22,311.81
6. Step 6: Final answer
   x = 18,659.07