Finding the Fourth Proportional to 11,490.50, 15,858.61 and 7,016.85

Step by Step Solution

1. Step 1: Write the proportion equation
   11,490.50 : 15,858.61 = 7,016.85 : x
2. Step 2: Convert to fraction form
   11,490.50/15,858.61 = 7,016.85/x
3. Step 3: Cross multiply
   11,490.50x = 15,858.61 × 7,016.85
4. Step 4: Simplify right side
   11,490.50x = 111,277,470.04
5. Step 5: Solve for x
   x = 111,277,470.04/11,490.50
6. Step 6: Final answer
   x = 9,684.30