Finding the Fourth Proportional to 11,351.51, 17,020.78 and 3,451.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,351.51 : 17,020.78 = 3,451.69 : x
2. Step 2: Convert to fraction form
   11,351.51/17,020.78 = 3,451.69/x
3. Step 3: Cross multiply
   11,351.51x = 17,020.78 × 3,451.69
4. Step 4: Simplify right side
   11,351.51x = 58,750,468.76
5. Step 5: Solve for x
   x = 58,750,468.76/11,351.51
6. Step 6: Final answer
   x = 5,175.56