Finding the Fourth Proportional to 9,159.72, 13,745.22 and 3,612.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,159.72 : 13,745.22 = 3,612.09 : x
2. Step 2: Convert to fraction form
   9,159.72/13,745.22 = 3,612.09/x
3. Step 3: Cross multiply
   9,159.72x = 13,745.22 × 3,612.09
4. Step 4: Simplify right side
   9,159.72x = 49,648,971.71
5. Step 5: Solve for x
   x = 49,648,971.71/9,159.72
6. Step 6: Final answer
   x = 5,420.36