Finding the Fourth Proportional to 11,601.56, 16,012.64 and 9,078.68

Step by Step Solution

1. Step 1: Write the proportion equation
   11,601.56 : 16,012.64 = 9,078.68 : x
2. Step 2: Convert to fraction form
   11,601.56/16,012.64 = 9,078.68/x
3. Step 3: Cross multiply
   11,601.56x = 16,012.64 × 9,078.68
4. Step 4: Simplify right side
   11,601.56x = 145,373,634.52
5. Step 5: Solve for x
   x = 145,373,634.52/11,601.56
6. Step 6: Final answer
   x = 12,530.52