Finding the Fourth Proportional to 10,991.25, 15,167.93 and 5,955.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,991.25 : 15,167.93 = 5,955.50 : x
2. Step 2: Convert to fraction form
   10,991.25/15,167.93 = 5,955.50/x
3. Step 3: Cross multiply
   10,991.25x = 15,167.93 × 5,955.50
4. Step 4: Simplify right side
   10,991.25x = 90,332,577.34
5. Step 5: Solve for x
   x = 90,332,577.34/10,991.25
6. Step 6: Final answer
   x = 8,218.59