Finding the Fourth Proportional to 13,066.54, 18,033.37 and 7,761.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,066.54 : 18,033.37 = 7,761.38 : x
2. Step 2: Convert to fraction form
   13,066.54/18,033.37 = 7,761.38/x
3. Step 3: Cross multiply
   13,066.54x = 18,033.37 × 7,761.38
4. Step 4: Simplify right side
   13,066.54x = 139,963,727.68
5. Step 5: Solve for x
   x = 139,963,727.68/13,066.54
6. Step 6: Final answer
   x = 10,711.62