Finding the Fourth Proportional to 13,427.30, 20,139.37 and 3,567.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,427.30 : 20,139.37 = 3,567.34 : x
2. Step 2: Convert to fraction form
   13,427.30/20,139.37 = 3,567.34/x
3. Step 3: Cross multiply
   13,427.30x = 20,139.37 × 3,567.34
4. Step 4: Simplify right side
   13,427.30x = 71,843,920.91
5. Step 5: Solve for x
   x = 71,843,920.91/13,427.30
6. Step 6: Final answer
   x = 5,350.58