Finding the Fourth Proportional to 8,331.98, 12,483.60 and 5,519.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,331.98 : 12,483.60 = 5,519.05 : x
2. Step 2: Convert to fraction form
   8,331.98/12,483.60 = 5,519.05/x
3. Step 3: Cross multiply
   8,331.98x = 12,483.60 × 5,519.05
4. Step 4: Simplify right side
   8,331.98x = 68,897,661.94
5. Step 5: Solve for x
   x = 68,897,661.94/8,331.98
6. Step 6: Final answer
   x = 8,269.06