Finding the Fourth Proportional to 7,784.78, 10,743.00 and 5,550.55

Step by Step Solution

1. Step 1: Write the proportion equation
   7,784.78 : 10,743.00 = 5,550.55 : x
2. Step 2: Convert to fraction form
   7,784.78/10,743.00 = 5,550.55/x
3. Step 3: Cross multiply
   7,784.78x = 10,743.00 × 5,550.55
4. Step 4: Simplify right side
   7,784.78x = 59,629,522.87
5. Step 5: Solve for x
   x = 59,629,522.87/7,784.78
6. Step 6: Final answer
   x = 7,659.76