Finding the Fourth Proportional to 8,976.69, 12,387.56 and 4,997.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,976.69 : 12,387.56 = 4,997.72 : x
2. Step 2: Convert to fraction form
   8,976.69/12,387.56 = 4,997.72/x
3. Step 3: Cross multiply
   8,976.69x = 12,387.56 × 4,997.72
4. Step 4: Simplify right side
   8,976.69x = 61,909,469.44
5. Step 5: Solve for x
   x = 61,909,469.44/8,976.69
6. Step 6: Final answer
   x = 6,896.69