Finding the Fourth Proportional to 13,411.82, 18,508.28 and 7,443.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.82 : 18,508.28 = 7,443.56 : x
2. Step 2: Convert to fraction form
   13,411.82/18,508.28 = 7,443.56/x
3. Step 3: Cross multiply
   13,411.82x = 18,508.28 × 7,443.56
4. Step 4: Simplify right side
   13,411.82x = 137,767,492.68
5. Step 5: Solve for x
   x = 137,767,492.68/13,411.82
6. Step 6: Final answer
   x = 10,272.10