Finding the Fourth Proportional to 11,928.69, 16,442.73 and 9,086.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,928.69 : 16,442.73 = 9,086.94 : x
2. Step 2: Convert to fraction form
   11,928.69/16,442.73 = 9,086.94/x
3. Step 3: Cross multiply
   11,928.69x = 16,442.73 × 9,086.94
4. Step 4: Simplify right side
   11,928.69x = 149,414,100.95
5. Step 5: Solve for x
   x = 149,414,100.95/11,928.69
6. Step 6: Final answer
   x = 12,525.61