Finding the Fourth Proportional to 13,631.22, 18,810.81 and 7,662.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,631.22 : 18,810.81 = 7,662.83 : x
2. Step 2: Convert to fraction form
   13,631.22/18,810.81 = 7,662.83/x
3. Step 3: Cross multiply
   13,631.22x = 18,810.81 × 7,662.83
4. Step 4: Simplify right side
   13,631.22x = 144,143,945.14
5. Step 5: Solve for x
   x = 144,143,945.14/13,631.22
6. Step 6: Final answer
   x = 10,574.54