Finding the Fourth Proportional to 12,167.56, 18,253.23 and 5,147.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,167.56 : 18,253.23 = 5,147.59 : x
2. Step 2: Convert to fraction form
   12,167.56/18,253.23 = 5,147.59/x
3. Step 3: Cross multiply
   12,167.56x = 18,253.23 × 5,147.59
4. Step 4: Simplify right side
   12,167.56x = 93,960,144.22
5. Step 5: Solve for x
   x = 93,960,144.22/12,167.56
6. Step 6: Final answer
   x = 7,722.18