Finding the Fourth Proportional to 8,555.72, 11,800.50 and 5,760.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,555.72 : 11,800.50 = 5,760.68 : x
2. Step 2: Convert to fraction form
   8,555.72/11,800.50 = 5,760.68/x
3. Step 3: Cross multiply
   8,555.72x = 11,800.50 × 5,760.68
4. Step 4: Simplify right side
   8,555.72x = 67,978,904.34
5. Step 5: Solve for x
   x = 67,978,904.34/8,555.72
6. Step 6: Final answer
   x = 7,945.43