Finding the Fourth Proportional to 13,507.98, 20,257.89 and 3,647.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,507.98 : 20,257.89 = 3,647.37 : x
2. Step 2: Convert to fraction form
   13,507.98/20,257.89 = 3,647.37/x
3. Step 3: Cross multiply
   13,507.98x = 20,257.89 × 3,647.37
4. Step 4: Simplify right side
   13,507.98x = 73,888,020.25
5. Step 5: Solve for x
   x = 73,888,020.25/13,507.98
6. Step 6: Final answer
   x = 5,469.95