Finding the Fourth Proportional to 8,766.12, 12,090.39 and 5,622.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,766.12 : 12,090.39 = 5,622.60 : x
2. Step 2: Convert to fraction form
   8,766.12/12,090.39 = 5,622.60/x
3. Step 3: Cross multiply
   8,766.12x = 12,090.39 × 5,622.60
4. Step 4: Simplify right side
   8,766.12x = 67,979,426.81
5. Step 5: Solve for x
   x = 67,979,426.81/8,766.12
6. Step 6: Final answer
   x = 7,754.79