Finding the Fourth Proportional to 13,073.72, 18,041.37 and 7,105.19

Step by Step Solution

1. Step 1: Write the proportion equation
   13,073.72 : 18,041.37 = 7,105.19 : x
2. Step 2: Convert to fraction form
   13,073.72/18,041.37 = 7,105.19/x
3. Step 3: Cross multiply
   13,073.72x = 18,041.37 × 7,105.19
4. Step 4: Simplify right side
   13,073.72x = 128,187,361.71
5. Step 5: Solve for x
   x = 128,187,361.71/13,073.72
6. Step 6: Final answer
   x = 9,804.96