Finding the Fourth Proportional to 22,481.50, 33,722.18 and 21,111.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,481.50 : 33,722.18 = 21,111.32 : x
2. Step 2: Convert to fraction form
   22,481.50/33,722.18 = 21,111.32/x
3. Step 3: Cross multiply
   22,481.50x = 33,722.18 × 21,111.32
4. Step 4: Simplify right side
   22,481.50x = 711,919,783.29
5. Step 5: Solve for x
   x = 711,919,783.29/22,481.50
6. Step 6: Final answer
   x = 31,666.92