Finding the Fourth Proportional to 11,751.77, 17,625.91 and 3,429.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,751.77 : 17,625.91 = 3,429.55 : x
2. Step 2: Convert to fraction form
   11,751.77/17,625.91 = 3,429.55/x
3. Step 3: Cross multiply
   11,751.77x = 17,625.91 × 3,429.55
4. Step 4: Simplify right side
   11,751.77x = 60,448,919.60
5. Step 5: Solve for x
   x = 60,448,919.60/11,751.77
6. Step 6: Final answer
   x = 5,143.82