Finding the Fourth Proportional to 11,527.78, 15,910.41 and 9,039.46

Step by Step Solution

1. Step 1: Write the proportion equation
   11,527.78 : 15,910.41 = 9,039.46 : x
2. Step 2: Convert to fraction form
   11,527.78/15,910.41 = 9,039.46/x
3. Step 3: Cross multiply
   11,527.78x = 15,910.41 × 9,039.46
4. Step 4: Simplify right side
   11,527.78x = 143,821,514.78
5. Step 5: Solve for x
   x = 143,821,514.78/11,527.78
6. Step 6: Final answer
   x = 12,476.08