Finding the Fourth Proportional to 9,123.56, 13,689.59 and 8,976.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,123.56 : 13,689.59 = 8,976.14 : x
2. Step 2: Convert to fraction form
   9,123.56/13,689.59 = 8,976.14/x
3. Step 3: Cross multiply
   9,123.56x = 13,689.59 × 8,976.14
4. Step 4: Simplify right side
   9,123.56x = 122,879,563.05
5. Step 5: Solve for x
   x = 122,879,563.05/9,123.56
6. Step 6: Final answer
   x = 13,468.39