Finding the Fourth Proportional to 10,963.35, 16,408.17 and 9,118.17

Step by Step Solution

1. Step 1: Write the proportion equation
   10,963.35 : 16,408.17 = 9,118.17 : x
2. Step 2: Convert to fraction form
   10,963.35/16,408.17 = 9,118.17/x
3. Step 3: Cross multiply
   10,963.35x = 16,408.17 × 9,118.17
4. Step 4: Simplify right side
   10,963.35x = 149,612,483.45
5. Step 5: Solve for x
   x = 149,612,483.45/10,963.35
6. Step 6: Final answer
   x = 13,646.60