Finding the Fourth Proportional to 10,087.69, 13,921.35 and 5,550.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.69 : 13,921.35 = 5,550.55 : x
2. Step 2: Convert to fraction form
   10,087.69/13,921.35 = 5,550.55/x
3. Step 3: Cross multiply
   10,087.69x = 13,921.35 × 5,550.55
4. Step 4: Simplify right side
   10,087.69x = 77,271,149.24
5. Step 5: Solve for x
   x = 77,271,149.24/10,087.69
6. Step 6: Final answer
   x = 7,659.94