Finding the Fourth Proportional to 10,991.24, 15,167.89 and 5,955.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,991.24 : 15,167.89 = 5,955.59 : x
2. Step 2: Convert to fraction form
   10,991.24/15,167.89 = 5,955.59/x
3. Step 3: Cross multiply
   10,991.24x = 15,167.89 × 5,955.59
4. Step 4: Simplify right side
   10,991.24x = 90,333,734.01
5. Step 5: Solve for x
   x = 90,333,734.01/10,991.24
6. Step 6: Final answer
   x = 8,218.70