Finding the Fourth Proportional to 13,411.76, 18,508.04 and 7,443.68

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.76 : 18,508.04 = 7,443.68 : x
2. Step 2: Convert to fraction form
   13,411.76/18,508.04 = 7,443.68/x
3. Step 3: Cross multiply
   13,411.76x = 18,508.04 × 7,443.68
4. Step 4: Simplify right side
   13,411.76x = 137,767,927.19
5. Step 5: Solve for x
   x = 137,767,927.19/13,411.76
6. Step 6: Final answer
   x = 10,272.17