Finding the Fourth Proportional to 7,556.24, 10,429.28 and 4,200.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,556.24 : 10,429.28 = 4,200.20 : x
2. Step 2: Convert to fraction form
   7,556.24/10,429.28 = 4,200.20/x
3. Step 3: Cross multiply
   7,556.24x = 10,429.28 × 4,200.20
4. Step 4: Simplify right side
   7,556.24x = 43,805,061.86
5. Step 5: Solve for x
   x = 43,805,061.86/7,556.24
6. Step 6: Final answer
   x = 5,797.20