Finding the Fourth Proportional to 10,990.89, 15,167.42 and 5,955.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,990.89 : 15,167.42 = 5,955.24 : x
2. Step 2: Convert to fraction form
   10,990.89/15,167.42 = 5,955.24/x
3. Step 3: Cross multiply
   10,990.89x = 15,167.42 × 5,955.24
4. Step 4: Simplify right side
   10,990.89x = 90,325,596.50
5. Step 5: Solve for x
   x = 90,325,596.50/10,990.89
6. Step 6: Final answer
   x = 8,218.22