Finding the Fourth Proportional to 11,063.21, 16,584.78 and 5,518.26

Step by Step Solution

1. Step 1: Write the proportion equation
   11,063.21 : 16,584.78 = 5,518.26 : x
2. Step 2: Convert to fraction form
   11,063.21/16,584.78 = 5,518.26/x
3. Step 3: Cross multiply
   11,063.21x = 16,584.78 × 5,518.26
4. Step 4: Simplify right side
   11,063.21x = 91,519,065.89
5. Step 5: Solve for x
   x = 91,519,065.89/11,063.21
6. Step 6: Final answer
   x = 8,272.38