Finding the Fourth Proportional to 11,419.82, 17,131.57 and 3,520.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,419.82 : 17,131.57 = 3,520.48 : x
2. Step 2: Convert to fraction form
   11,419.82/17,131.57 = 3,520.48/x
3. Step 3: Cross multiply
   11,419.82x = 17,131.57 × 3,520.48
4. Step 4: Simplify right side
   11,419.82x = 60,311,434.17
5. Step 5: Solve for x
   x = 60,311,434.17/11,419.82
6. Step 6: Final answer
   x = 5,281.30