Finding the Fourth Proportional to 39,912.72, 55,075.88 and 22,003.22

Step by Step Solution

1. Step 1: Write the proportion equation
   39,912.72 : 55,075.88 = 22,003.22 : x
2. Step 2: Convert to fraction form
   39,912.72/55,075.88 = 22,003.22/x
3. Step 3: Cross multiply
   39,912.72x = 55,075.88 × 22,003.22
4. Step 4: Simplify right side
   39,912.72x = 1,211,846,704.33
5. Step 5: Solve for x
   x = 1,211,846,704.33/39,912.72
6. Step 6: Final answer
   x = 30,362.42