Finding the Fourth Proportional to 13,412.71, 18,509.25 and 7,444.03

Step by Step Solution

1. Step 1: Write the proportion equation
   13,412.71 : 18,509.25 = 7,444.03 : x
2. Step 2: Convert to fraction form
   13,412.71/18,509.25 = 7,444.03/x
3. Step 3: Cross multiply
   13,412.71x = 18,509.25 × 7,444.03
4. Step 4: Simplify right side
   13,412.71x = 137,783,412.28
5. Step 5: Solve for x
   x = 137,783,412.28/13,412.71
6. Step 6: Final answer
   x = 10,272.60