Finding the Fourth Proportional to 8,962.92, 13,449.78 and 3,123.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,962.92 : 13,449.78 = 3,123.63 : x
2. Step 2: Convert to fraction form
   8,962.92/13,449.78 = 3,123.63/x
3. Step 3: Cross multiply
   8,962.92x = 13,449.78 × 3,123.63
4. Step 4: Simplify right side
   8,962.92x = 42,012,136.30
5. Step 5: Solve for x
   x = 42,012,136.30/8,962.92
6. Step 6: Final answer
   x = 4,687.33