Finding the Fourth Proportional to 12,494.10, 18,608.55 and 12,433.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,494.10 : 18,608.55 = 12,433.75 : x
2. Step 2: Convert to fraction form
   12,494.10/18,608.55 = 12,433.75/x
3. Step 3: Cross multiply
   12,494.10x = 18,608.55 × 12,433.75
4. Step 4: Simplify right side
   12,494.10x = 231,374,058.56
5. Step 5: Solve for x
   x = 231,374,058.56/12,494.10
6. Step 6: Final answer
   x = 18,518.67