Finding the Fourth Proportional to 12,448.56, 18,667.56 and 3,681.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,448.56 : 18,667.56 = 3,681.12 : x
2. Step 2: Convert to fraction form
   12,448.56/18,667.56 = 3,681.12/x
3. Step 3: Cross multiply
   12,448.56x = 18,667.56 × 3,681.12
4. Step 4: Simplify right side
   12,448.56x = 68,717,528.47
5. Step 5: Solve for x
   x = 68,717,528.47/12,448.56
6. Step 6: Final answer
   x = 5,520.12