Finding the Fourth Proportional to 10,913.36, 16,365.18 and 3,983

Step by Step Solution

1. Step 1: Write the proportion equation
   10,913.36 : 16,365.18 = 3,983 : x
2. Step 2: Convert to fraction form
   10,913.36/16,365.18 = 3,983/x
3. Step 3: Cross multiply
   10,913.36x = 16,365.18 × 3,983
4. Step 4: Simplify right side
   10,913.36x = 65,182,511.94
5. Step 5: Solve for x
   x = 65,182,511.94/10,913.36
6. Step 6: Final answer
   x = 5,972.73