Finding the Fourth Proportional to 12,169.98, 18,247.34 and 5,587.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,169.98 : 18,247.34 = 5,587.72 : x
2. Step 2: Convert to fraction form
   12,169.98/18,247.34 = 5,587.72/x
3. Step 3: Cross multiply
   12,169.98x = 18,247.34 × 5,587.72
4. Step 4: Simplify right side
   12,169.98x = 101,961,026.66
5. Step 5: Solve for x
   x = 101,961,026.66/12,169.98
6. Step 6: Final answer
   x = 8,378.08