Finding the Fourth Proportional to 12,443.09, 18,667.60 and 3,558.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443.09 : 18,667.60 = 3,558.56 : x
2. Step 2: Convert to fraction form
   12,443.09/18,667.60 = 3,558.56/x
3. Step 3: Cross multiply
   12,443.09x = 18,667.60 × 3,558.56
4. Step 4: Simplify right side
   12,443.09x = 66,429,672.42
5. Step 5: Solve for x
   x = 66,429,672.42/12,443.09
6. Step 6: Final answer
   x = 5,338.68