Finding the Fourth Proportional to 7,238.55, 9,993.69 and 5,556.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,238.55 : 9,993.69 = 5,556.75 : x
2. Step 2: Convert to fraction form
   7,238.55/9,993.69 = 5,556.75/x
3. Step 3: Cross multiply
   7,238.55x = 9,993.69 × 5,556.75
4. Step 4: Simplify right side
   7,238.55x = 55,532,436.91
5. Step 5: Solve for x
   x = 55,532,436.91/7,238.55
6. Step 6: Final answer
   x = 7,671.76