Finding the Fourth Proportional to 11,013.99, 15,199.18 and 5,978.22

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.99 : 15,199.18 = 5,978.22 : x
2. Step 2: Convert to fraction form
   11,013.99/15,199.18 = 5,978.22/x
3. Step 3: Cross multiply
   11,013.99x = 15,199.18 × 5,978.22
4. Step 4: Simplify right side
   11,013.99x = 90,864,041.86
5. Step 5: Solve for x
   x = 90,864,041.86/11,013.99
6. Step 6: Final answer
   x = 8,249.88