Finding the Fourth Proportional to 7,760.37, 10,709.28 and 4,223.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,760.37 : 10,709.28 = 4,223.61 : x
2. Step 2: Convert to fraction form
   7,760.37/10,709.28 = 4,223.61/x
3. Step 3: Cross multiply
   7,760.37x = 10,709.28 × 4,223.61
4. Step 4: Simplify right side
   7,760.37x = 45,231,822.10
5. Step 5: Solve for x
   x = 45,231,822.10/7,760.37
6. Step 6: Final answer
   x = 5,828.57