Finding the Fourth Proportional to 11,419.40, 17,131.84 and 3,628.22

Step by Step Solution

1. Step 1: Write the proportion equation
   11,419.40 : 17,131.84 = 3,628.22 : x
2. Step 2: Convert to fraction form
   11,419.40/17,131.84 = 3,628.22/x
3. Step 3: Cross multiply
   11,419.40x = 17,131.84 × 3,628.22
4. Step 4: Simplify right side
   11,419.40x = 62,158,084.52
5. Step 5: Solve for x
   x = 62,158,084.52/11,419.40
6. Step 6: Final answer
   x = 5,443.20