Finding the Fourth Proportional to 11,022.88, 15,211.76 and 5,987.11

Step by Step Solution

1. Step 1: Write the proportion equation
   11,022.88 : 15,211.76 = 5,987.11 : x
2. Step 2: Convert to fraction form
   11,022.88/15,211.76 = 5,987.11/x
3. Step 3: Cross multiply
   11,022.88x = 15,211.76 × 5,987.11
4. Step 4: Simplify right side
   11,022.88x = 91,074,412.45
5. Step 5: Solve for x
   x = 91,074,412.45/11,022.88
6. Step 6: Final answer
   x = 8,262.31