Finding the Fourth Proportional to 11,945.48, 17,919.12 and 3,626.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945.48 : 17,919.12 = 3,626.17 : x
2. Step 2: Convert to fraction form
   11,945.48/17,919.12 = 3,626.17/x
3. Step 3: Cross multiply
   11,945.48x = 17,919.12 × 3,626.17
4. Step 4: Simplify right side
   11,945.48x = 64,977,744.17
5. Step 5: Solve for x
   x = 64,977,744.17/11,945.48
6. Step 6: Final answer
   x = 5,439.53