Finding the Fourth Proportional to 12,021.60, 18,032.52 and 3,256.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,021.60 : 18,032.52 = 3,256.56 : x
2. Step 2: Convert to fraction form
   12,021.60/18,032.52 = 3,256.56/x
3. Step 3: Cross multiply
   12,021.60x = 18,032.52 × 3,256.56
4. Step 4: Simplify right side
   12,021.60x = 58,723,983.33
5. Step 5: Solve for x
   x = 58,723,983.33/12,021.60
6. Step 6: Final answer
   x = 4,884.87