Finding the Fourth Proportional to 10,959.86, 16,436.60 and 3,938.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,959.86 : 16,436.60 = 3,938.68 : x
2. Step 2: Convert to fraction form
   10,959.86/16,436.60 = 3,938.68/x
3. Step 3: Cross multiply
   10,959.86x = 16,436.60 × 3,938.68
4. Step 4: Simplify right side
   10,959.86x = 64,738,545.47
5. Step 5: Solve for x
   x = 64,738,545.47/10,959.86
6. Step 6: Final answer
   x = 5,906.88