Finding the Fourth Proportional to 12,167.81, 18,257.34 and 4,774.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,167.81 : 18,257.34 = 4,774.23 : x
2. Step 2: Convert to fraction form
   12,167.81/18,257.34 = 4,774.23/x
3. Step 3: Cross multiply
   12,167.81x = 18,257.34 × 4,774.23
4. Step 4: Simplify right side
   12,167.81x = 87,164,776.03
5. Step 5: Solve for x
   x = 87,164,776.03/12,167.81
6. Step 6: Final answer
   x = 7,163.55