Finding the Fourth Proportional to 11,357.75, 17,028.31 and 5,351.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,357.75 : 17,028.31 = 5,351.78 : x
2. Step 2: Convert to fraction form
   11,357.75/17,028.31 = 5,351.78/x
3. Step 3: Cross multiply
   11,357.75x = 17,028.31 × 5,351.78
4. Step 4: Simplify right side
   11,357.75x = 91,131,811.46
5. Step 5: Solve for x
   x = 91,131,811.46/11,357.75
6. Step 6: Final answer
   x = 8,023.75