Finding the Fourth Proportional to 10,983.48, 16,480.62 and 5,436.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,983.48 : 16,480.62 = 5,436.60 : x
2. Step 2: Convert to fraction form
   10,983.48/16,480.62 = 5,436.60/x
3. Step 3: Cross multiply
   10,983.48x = 16,480.62 × 5,436.60
4. Step 4: Simplify right side
   10,983.48x = 89,598,538.69
5. Step 5: Solve for x
   x = 89,598,538.69/10,983.48
6. Step 6: Final answer
   x = 8,157.57