Finding the Fourth Proportional to 8,774.72, 12,107.42 and 4,997.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,774.72 : 12,107.42 = 4,997.80 : x
2. Step 2: Convert to fraction form
   8,774.72/12,107.42 = 4,997.80/x
3. Step 3: Cross multiply
   8,774.72x = 12,107.42 × 4,997.80
4. Step 4: Simplify right side
   8,774.72x = 60,510,462.37
5. Step 5: Solve for x
   x = 60,510,462.37/8,774.72
6. Step 6: Final answer
   x = 6,896.00