Finding the Fourth Proportional to 12,323.89, 18,468.55 and 8,211.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,323.89 : 18,468.55 = 8,211.25 : x
2. Step 2: Convert to fraction form
   12,323.89/18,468.55 = 8,211.25/x
3. Step 3: Cross multiply
   12,323.89x = 18,468.55 × 8,211.25
4. Step 4: Simplify right side
   12,323.89x = 151,649,881.19
5. Step 5: Solve for x
   x = 151,649,881.19/12,323.89
6. Step 6: Final answer
   x = 12,305.36