Finding the Fourth Proportional to 28,396.46, 42,601.37 and 8,676.60

Step by Step Solution

1. Step 1: Write the proportion equation
   28,396.46 : 42,601.37 = 8,676.60 : x
2. Step 2: Convert to fraction form
   28,396.46/42,601.37 = 8,676.60/x
3. Step 3: Cross multiply
   28,396.46x = 42,601.37 × 8,676.60
4. Step 4: Simplify right side
   28,396.46x = 369,635,003.56
5. Step 5: Solve for x
   x = 369,635,003.56/28,396.46
6. Step 6: Final answer
   x = 13,016.94