Finding the Fourth Proportional to 12,567.69, 18,851.51 and 3,207.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,567.69 : 18,851.51 = 3,207.70 : x
2. Step 2: Convert to fraction form
   12,567.69/18,851.51 = 3,207.70/x
3. Step 3: Cross multiply
   12,567.69x = 18,851.51 × 3,207.70
4. Step 4: Simplify right side
   12,567.69x = 60,470,057.72
5. Step 5: Solve for x
   x = 60,470,057.72/12,567.69
6. Step 6: Final answer
   x = 4,811.55