Finding the Fourth Proportional to 13,411.61, 18,508.06 and 7,443.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.61 : 18,508.06 = 7,443.29 : x
2. Step 2: Convert to fraction form
   13,411.61/18,508.06 = 7,443.29/x
3. Step 3: Cross multiply
   13,411.61x = 18,508.06 × 7,443.29
4. Step 4: Simplify right side
   13,411.61x = 137,760,913.49
5. Step 5: Solve for x
   x = 137,760,913.49/13,411.61
6. Step 6: Final answer
   x = 10,271.77