Finding the Fourth Proportional to 11,018.55, 15,205.74 and 5,982.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,018.55 : 15,205.74 = 5,982.78 : x
2. Step 2: Convert to fraction form
   11,018.55/15,205.74 = 5,982.78/x
3. Step 3: Cross multiply
   11,018.55x = 15,205.74 × 5,982.78
4. Step 4: Simplify right side
   11,018.55x = 90,972,597.16
5. Step 5: Solve for x
   x = 90,972,597.16/11,018.55
6. Step 6: Final answer
   x = 8,256.31