Finding the Fourth Proportional to 12,066.45, 16,643.52 and 9,828.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,066.45 : 16,643.52 = 9,828.42 : x
2. Step 2: Convert to fraction form
   12,066.45/16,643.52 = 9,828.42/x
3. Step 3: Cross multiply
   12,066.45x = 16,643.52 × 9,828.42
4. Step 4: Simplify right side
   12,066.45x = 163,579,504.84
5. Step 5: Solve for x
   x = 163,579,504.84/12,066.45
6. Step 6: Final answer
   x = 13,556.56