Finding the Fourth Proportional to 11,086.64, 15,287.12 and 9,063.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.64 : 15,287.12 = 9,063.76 : x
2. Step 2: Convert to fraction form
   11,086.64/15,287.12 = 9,063.76/x
3. Step 3: Cross multiply
   11,086.64x = 15,287.12 × 9,063.76
4. Step 4: Simplify right side
   11,086.64x = 138,558,786.77
5. Step 5: Solve for x
   x = 138,558,786.77/11,086.64
6. Step 6: Final answer
   x = 12,497.82