Finding the Fourth Proportional to 10,990.82, 15,167.34 and 5,955.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990.82 : 15,167.34 = 5,955.09 : x
2. Step 2: Convert to fraction form
   10,990.82/15,167.34 = 5,955.09/x
3. Step 3: Cross multiply
   10,990.82x = 15,167.34 × 5,955.09
4. Step 4: Simplify right side
   10,990.82x = 90,322,874.76
5. Step 5: Solve for x
   x = 90,322,874.76/10,990.82
6. Step 6: Final answer
   x = 8,218.03