Finding the Fourth Proportional to 11,255.50, 16,869.77 and 5,243.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,255.50 : 16,869.77 = 5,243.47 : x
2. Step 2: Convert to fraction form
   11,255.50/16,869.77 = 5,243.47/x
3. Step 3: Cross multiply
   11,255.50x = 16,869.77 × 5,243.47
4. Step 4: Simplify right side
   11,255.50x = 88,456,106.68
5. Step 5: Solve for x
   x = 88,456,106.68/11,255.50
6. Step 6: Final answer
   x = 7,858.92