Finding the Fourth Proportional to 10,967.98, 16,454.38 and 5,121.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,967.98 : 16,454.38 = 5,121.40 : x
2. Step 2: Convert to fraction form
   10,967.98/16,454.38 = 5,121.40/x
3. Step 3: Cross multiply
   10,967.98x = 16,454.38 × 5,121.40
4. Step 4: Simplify right side
   10,967.98x = 84,269,461.73
5. Step 5: Solve for x
   x = 84,269,461.73/10,967.98
6. Step 6: Final answer
   x = 7,683.23