Finding the Fourth Proportional to 10,967.57, 16,446.41 and 5,418.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,967.57 : 16,446.41 = 5,418.75 : x
2. Step 2: Convert to fraction form
   10,967.57/16,446.41 = 5,418.75/x
3. Step 3: Cross multiply
   10,967.57x = 16,446.41 × 5,418.75
4. Step 4: Simplify right side
   10,967.57x = 89,118,984.19
5. Step 5: Solve for x
   x = 89,118,984.19/10,967.57
6. Step 6: Final answer
   x = 8,125.68