Finding the Fourth Proportional to 10,986.64, 16,554.94 and 9,081.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,986.64 : 16,554.94 = 9,081.52 : x
2. Step 2: Convert to fraction form
   10,986.64/16,554.94 = 9,081.52/x
3. Step 3: Cross multiply
   10,986.64x = 16,554.94 × 9,081.52
4. Step 4: Simplify right side
   10,986.64x = 150,344,018.71
5. Step 5: Solve for x
   x = 150,344,018.71/10,986.64
6. Step 6: Final answer
   x = 13,684.26