Finding the Fourth Proportional to 12,167.45, 18,248.42 and 5,587.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,167.45 : 18,248.42 = 5,587.31 : x
2. Step 2: Convert to fraction form
   12,167.45/18,248.42 = 5,587.31/x
3. Step 3: Cross multiply
   12,167.45x = 18,248.42 × 5,587.31
4. Step 4: Simplify right side
   12,167.45x = 101,959,460.37
5. Step 5: Solve for x
   x = 101,959,460.37/12,167.45
6. Step 6: Final answer
   x = 8,379.69