Finding the Fourth Proportional to 11,089.55, 16,636.25 and 4,519.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,089.55 : 16,636.25 = 4,519.31 : x
2. Step 2: Convert to fraction form
   11,089.55/16,636.25 = 4,519.31/x
3. Step 3: Cross multiply
   11,089.55x = 16,636.25 × 4,519.31
4. Step 4: Simplify right side
   11,089.55x = 75,184,348.39
5. Step 5: Solve for x
   x = 75,184,348.39/11,089.55
6. Step 6: Final answer
   x = 6,779.75