Finding the Fourth Proportional to 8,790.82, 12,118.70 and 6,268.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,790.82 : 12,118.70 = 6,268.55 : x
2. Step 2: Convert to fraction form
   8,790.82/12,118.70 = 6,268.55/x
3. Step 3: Cross multiply
   8,790.82x = 12,118.70 × 6,268.55
4. Step 4: Simplify right side
   8,790.82x = 75,966,676.89
5. Step 5: Solve for x
   x = 75,966,676.89/8,790.82
6. Step 6: Final answer
   x = 8,641.59