Finding the Fourth Proportional to 8,766.36, 12,097.88 and 4,990.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,766.36 : 12,097.88 = 4,990.09 : x
2. Step 2: Convert to fraction form
   8,766.36/12,097.88 = 4,990.09/x
3. Step 3: Cross multiply
   8,766.36x = 12,097.88 × 4,990.09
4. Step 4: Simplify right side
   8,766.36x = 60,369,510.01
5. Step 5: Solve for x
   x = 60,369,510.01/8,766.36
6. Step 6: Final answer
   x = 6,886.50