Finding the Fourth Proportional to 12,322.09, 18,480.43 and 3,555.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,322.09 : 18,480.43 = 3,555.10 : x
2. Step 2: Convert to fraction form
   12,322.09/18,480.43 = 3,555.10/x
3. Step 3: Cross multiply
   12,322.09x = 18,480.43 × 3,555.10
4. Step 4: Simplify right side
   12,322.09x = 65,699,776.69
5. Step 5: Solve for x
   x = 65,699,776.69/12,322.09
6. Step 6: Final answer
   x = 5,331.87