Finding the Fourth Proportional to 10,959.50, 15,124.23 and 5,991.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,959.50 : 15,124.23 = 5,991.50 : x
2. Step 2: Convert to fraction form
   10,959.50/15,124.23 = 5,991.50/x
3. Step 3: Cross multiply
   10,959.50x = 15,124.23 × 5,991.50
4. Step 4: Simplify right side
   10,959.50x = 90,616,824.05
5. Step 5: Solve for x
   x = 90,616,824.05/10,959.50
6. Step 6: Final answer
   x = 8,268.34