Finding the Fourth Proportional to 11,357.42, 17,031.26 and 3,959.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,357.42 : 17,031.26 = 3,959.69 : x
2. Step 2: Convert to fraction form
   11,357.42/17,031.26 = 3,959.69/x
3. Step 3: Cross multiply
   11,357.42x = 17,031.26 × 3,959.69
4. Step 4: Simplify right side
   11,357.42x = 67,438,404.95
5. Step 5: Solve for x
   x = 67,438,404.95/11,357.42
6. Step 6: Final answer
   x = 5,937.83