Finding the Fourth Proportional to 11,601.78, 16,010.37 and 9,086.46

Step by Step Solution

1. Step 1: Write the proportion equation
   11,601.78 : 16,010.37 = 9,086.46 : x
2. Step 2: Convert to fraction form
   11,601.78/16,010.37 = 9,086.46/x
3. Step 3: Cross multiply
   11,601.78x = 16,010.37 × 9,086.46
4. Step 4: Simplify right side
   11,601.78x = 145,477,586.59
5. Step 5: Solve for x
   x = 145,477,586.59/11,601.78
6. Step 6: Final answer
   x = 12,539.25