Finding the Fourth Proportional to 12,963.84, 17,914.32 and 10,605.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,963.84 : 17,914.32 = 10,605.12 : x
2. Step 2: Convert to fraction form
   12,963.84/17,914.32 = 10,605.12/x
3. Step 3: Cross multiply
   12,963.84x = 17,914.32 × 10,605.12
4. Step 4: Simplify right side
   12,963.84x = 189,983,513.32
5. Step 5: Solve for x
   x = 189,983,513.32/12,963.84
6. Step 6: Final answer
   x = 14,654.88