Finding the Fourth Proportional to 12,374.16, 18,567.61 and 8,217.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,374.16 : 18,567.61 = 8,217.03 : x
2. Step 2: Convert to fraction form
   12,374.16/18,567.61 = 8,217.03/x
3. Step 3: Cross multiply
   12,374.16x = 18,567.61 × 8,217.03
4. Step 4: Simplify right side
   12,374.16x = 152,570,608.40
5. Step 5: Solve for x
   x = 152,570,608.40/12,374.16
6. Step 6: Final answer
   x = 12,329.77