Finding the Fourth Proportional to 8,081.55, 12,110.60 and 5,580.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,081.55 : 12,110.60 = 5,580.16 : x
2. Step 2: Convert to fraction form
   8,081.55/12,110.60 = 5,580.16/x
3. Step 3: Cross multiply
   8,081.55x = 12,110.60 × 5,580.16
4. Step 4: Simplify right side
   8,081.55x = 67,579,069.37
5. Step 5: Solve for x
   x = 67,579,069.37/8,081.55
6. Step 6: Final answer
   x = 8,362.14