Finding the Fourth Proportional to 8,868.78, 12,238.38 and 4,889.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,868.78 : 12,238.38 = 4,889.94 : x
2. Step 2: Convert to fraction form
   8,868.78/12,238.38 = 4,889.94/x
3. Step 3: Cross multiply
   8,868.78x = 12,238.38 × 4,889.94
4. Step 4: Simplify right side
   8,868.78x = 59,844,943.90
5. Step 5: Solve for x
   x = 59,844,943.90/8,868.78
6. Step 6: Final answer
   x = 6,747.82