Finding the Fourth Proportional to 13,411.37, 18,507.89 and 7,443.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.37 : 18,507.89 = 7,443.42 : x
2. Step 2: Convert to fraction form
   13,411.37/18,507.89 = 7,443.42/x
3. Step 3: Cross multiply
   13,411.37x = 18,507.89 × 7,443.42
4. Step 4: Simplify right side
   13,411.37x = 137,761,961.37
5. Step 5: Solve for x
   x = 137,761,961.37/13,411.37
6. Step 6: Final answer
   x = 10,272.03