Finding the Fourth Proportional to 6,622.50, 9,139.03 and 3,638.33

Step by Step Solution

1. Step 1: Write the proportion equation
   6,622.50 : 9,139.03 = 3,638.33 : x
2. Step 2: Convert to fraction form
   6,622.50/9,139.03 = 3,638.33/x
3. Step 3: Cross multiply
   6,622.50x = 9,139.03 × 3,638.33
4. Step 4: Simplify right side
   6,622.50x = 33,250,786.50
5. Step 5: Solve for x
   x = 33,250,786.50/6,622.50
6. Step 6: Final answer
   x = 5,020.88