Finding the Fourth Proportional to 11,422.52, 17,134.69 and 5,419.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,422.52 : 17,134.69 = 5,419.20 : x
2. Step 2: Convert to fraction form
   11,422.52/17,134.69 = 5,419.20/x
3. Step 3: Cross multiply
   11,422.52x = 17,134.69 × 5,419.20
4. Step 4: Simplify right side
   11,422.52x = 92,856,372.92
5. Step 5: Solve for x
   x = 92,856,372.92/11,422.52
6. Step 6: Final answer
   x = 8,129.24