Finding the Fourth Proportional to 13,411.49, 18,509.01 and 7,444.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.49 : 18,509.01 = 7,444.31 : x
2. Step 2: Convert to fraction form
   13,411.49/18,509.01 = 7,444.31/x
3. Step 3: Cross multiply
   13,411.49x = 18,509.01 × 7,444.31
4. Step 4: Simplify right side
   13,411.49x = 137,786,808.23
5. Step 5: Solve for x
   x = 137,786,808.23/13,411.49
6. Step 6: Final answer
   x = 10,273.79