Finding the Fourth Proportional to 13,743.05, 18,965.49 and 7,455.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,743.05 : 18,965.49 = 7,455.42 : x
2. Step 2: Convert to fraction form
   13,743.05/18,965.49 = 7,455.42/x
3. Step 3: Cross multiply
   13,743.05x = 18,965.49 × 7,455.42
4. Step 4: Simplify right side
   13,743.05x = 141,395,693.46
5. Step 5: Solve for x
   x = 141,395,693.46/13,743.05
6. Step 6: Final answer
   x = 10,288.53