Finding the Fourth Proportional to 33,220.50, 49,851.50 and 13,499.05

Step by Step Solution

1. Step 1: Write the proportion equation
   33,220.50 : 49,851.50 = 13,499.05 : x
2. Step 2: Convert to fraction form
   33,220.50/49,851.50 = 13,499.05/x
3. Step 3: Cross multiply
   33,220.50x = 49,851.50 × 13,499.05
4. Step 4: Simplify right side
   33,220.50x = 672,947,916.39
5. Step 5: Solve for x
   x = 672,947,916.39/33,220.50
6. Step 6: Final answer
   x = 20,257.01