Finding the Fourth Proportional to 13,411.71, 18,507.29 and 7,443.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.71 : 18,507.29 = 7,443.09 : x
2. Step 2: Convert to fraction form
   13,411.71/18,507.29 = 7,443.09/x
3. Step 3: Cross multiply
   13,411.71x = 18,507.29 × 7,443.09
4. Step 4: Simplify right side
   13,411.71x = 137,751,387.91
5. Step 5: Solve for x
   x = 137,751,387.91/13,411.71
6. Step 6: Final answer
   x = 10,270.98