Finding the Fourth Proportional to 8,005.55, 11,997.41 and 5,078.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,005.55 : 11,997.41 = 5,078.61 : x
2. Step 2: Convert to fraction form
   8,005.55/11,997.41 = 5,078.61/x
3. Step 3: Cross multiply
   8,005.55x = 11,997.41 × 5,078.61
4. Step 4: Simplify right side
   8,005.55x = 60,930,141.01
5. Step 5: Solve for x
   x = 60,930,141.01/8,005.55
6. Step 6: Final answer
   x = 7,610.99