Finding the Fourth Proportional to 22,075.05, 33,036.20 and 13,638.09

Step by Step Solution

1. Step 1: Write the proportion equation
   22,075.05 : 33,036.20 = 13,638.09 : x
2. Step 2: Convert to fraction form
   22,075.05/33,036.20 = 13,638.09/x
3. Step 3: Cross multiply
   22,075.05x = 33,036.20 × 13,638.09
4. Step 4: Simplify right side
   22,075.05x = 450,550,600.67
5. Step 5: Solve for x
   x = 450,550,600.67/22,075.05
6. Step 6: Final answer
   x = 20,409.95