Finding the Fourth Proportional to 10,994.46, 16,487.56 and 4,418.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,994.46 : 16,487.56 = 4,418.40 : x
2. Step 2: Convert to fraction form
   10,994.46/16,487.56 = 4,418.40/x
3. Step 3: Cross multiply
   10,994.46x = 16,487.56 × 4,418.40
4. Step 4: Simplify right side
   10,994.46x = 72,848,635.10
5. Step 5: Solve for x
   x = 72,848,635.10/10,994.46
6. Step 6: Final answer
   x = 6,625.94