Finding the Fourth Proportional to 8,758.78, 12,086.61 and 4,982.86

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.78 : 12,086.61 = 4,982.86 : x
2. Step 2: Convert to fraction form
   8,758.78/12,086.61 = 4,982.86/x
3. Step 3: Cross multiply
   8,758.78x = 12,086.61 × 4,982.86
4. Step 4: Simplify right side
   8,758.78x = 60,225,885.50
5. Step 5: Solve for x
   x = 60,225,885.50/8,758.78
6. Step 6: Final answer
   x = 6,876.06