Finding the Fourth Proportional to 11,613.60, 16,025.31 and 9,616.14

Step by Step Solution

1. Step 1: Write the proportion equation
   11,613.60 : 16,025.31 = 9,616.14 : x
2. Step 2: Convert to fraction form
   11,613.60/16,025.31 = 9,616.14/x
3. Step 3: Cross multiply
   11,613.60x = 16,025.31 × 9,616.14
4. Step 4: Simplify right side
   11,613.60x = 154,101,624.50
5. Step 5: Solve for x
   x = 154,101,624.50/11,613.60
6. Step 6: Final answer
   x = 13,269.07