Finding the Fourth Proportional to 8,893.78, 12,273.59 and 4,915.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,893.78 : 12,273.59 = 4,915.06 : x
2. Step 2: Convert to fraction form
   8,893.78/12,273.59 = 4,915.06/x
3. Step 3: Cross multiply
   8,893.78x = 12,273.59 × 4,915.06
4. Step 4: Simplify right side
   8,893.78x = 60,325,431.27
5. Step 5: Solve for x
   x = 60,325,431.27/8,893.78
6. Step 6: Final answer
   x = 6,782.88