Finding the Fourth Proportional to 13,412.42, 18,508.79 and 7,443.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,412.42 : 18,508.79 = 7,443.94 : x
2. Step 2: Convert to fraction form
   13,412.42/18,508.79 = 7,443.94/x
3. Step 3: Cross multiply
   13,412.42x = 18,508.79 × 7,443.94
4. Step 4: Simplify right side
   13,412.42x = 137,778,322.23
5. Step 5: Solve for x
   x = 137,778,322.23/13,412.42
6. Step 6: Final answer
   x = 10,272.44