Finding the Fourth Proportional to 8,103.88, 12,156.41 and 2,838.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,103.88 : 12,156.41 = 2,838.30 : x
2. Step 2: Convert to fraction form
   8,103.88/12,156.41 = 2,838.30/x
3. Step 3: Cross multiply
   8,103.88x = 12,156.41 × 2,838.30
4. Step 4: Simplify right side
   8,103.88x = 34,503,538.50
5. Step 5: Solve for x
   x = 34,503,538.50/8,103.88
6. Step 6: Final answer
   x = 4,257.66