Finding the Fourth Proportional to 8,768.74, 12,097.86 and 4,990.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,768.74 : 12,097.86 = 4,990.96 : x
2. Step 2: Convert to fraction form
   8,768.74/12,097.86 = 4,990.96/x
3. Step 3: Cross multiply
   8,768.74x = 12,097.86 × 4,990.96
4. Step 4: Simplify right side
   8,768.74x = 60,379,886.38
5. Step 5: Solve for x
   x = 60,379,886.38/8,768.74
6. Step 6: Final answer
   x = 6,885.81