Finding the Fourth Proportional to 12,255.42, 18,383.37 and 3,490.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,255.42 : 18,383.37 = 3,490.59 : x
2. Step 2: Convert to fraction form
   12,255.42/18,383.37 = 3,490.59/x
3. Step 3: Cross multiply
   12,255.42x = 18,383.37 × 3,490.59
4. Step 4: Simplify right side
   12,255.42x = 64,168,807.49
5. Step 5: Solve for x
   x = 64,168,807.49/12,255.42
6. Step 6: Final answer
   x = 5,235.95