Finding the Fourth Proportional to 22,705.50, 31,336.20 and 13,273.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,705.50 : 31,336.20 = 13,273.50 : x
2. Step 2: Convert to fraction form
   22,705.50/31,336.20 = 13,273.50/x
3. Step 3: Cross multiply
   22,705.50x = 31,336.20 × 13,273.50
4. Step 4: Simplify right side
   22,705.50x = 415,941,050.70
5. Step 5: Solve for x
   x = 415,941,050.70/22,705.50
6. Step 6: Final answer
   x = 18,318.96