Finding the Fourth Proportional to 12,289.42, 18,434.94 and 3,524.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,289.42 : 18,434.94 = 3,524.14 : x
2. Step 2: Convert to fraction form
   12,289.42/18,434.94 = 3,524.14/x
3. Step 3: Cross multiply
   12,289.42x = 18,434.94 × 3,524.14
4. Step 4: Simplify right side
   12,289.42x = 64,967,309.45
5. Step 5: Solve for x
   x = 64,967,309.45/12,289.42
6. Step 6: Final answer
   x = 5,286.44