Finding the Fourth Proportional to 11,013.97, 15,199.32 and 5,978.20

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.97 : 15,199.32 = 5,978.20 : x
2. Step 2: Convert to fraction form
   11,013.97/15,199.32 = 5,978.20/x
3. Step 3: Cross multiply
   11,013.97x = 15,199.32 × 5,978.20
4. Step 4: Simplify right side
   11,013.97x = 90,864,574.82
5. Step 5: Solve for x
   x = 90,864,574.82/11,013.97
6. Step 6: Final answer
   x = 8,249.94