Finding the Fourth Proportional to 11,488.53, 15,853.78 and 7,019.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,488.53 : 15,853.78 = 7,019.76 : x
2. Step 2: Convert to fraction form
   11,488.53/15,853.78 = 7,019.76/x
3. Step 3: Cross multiply
   11,488.53x = 15,853.78 × 7,019.76
4. Step 4: Simplify right side
   11,488.53x = 111,289,759.43
5. Step 5: Solve for x
   x = 111,289,759.43/11,488.53
6. Step 6: Final answer
   x = 9,687.03