Finding the Fourth Proportional to 13,411.84, 18,508.34 and 7,443.51

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.84 : 18,508.34 = 7,443.51 : x
2. Step 2: Convert to fraction form
   13,411.84/18,508.34 = 7,443.51/x
3. Step 3: Cross multiply
   13,411.84x = 18,508.34 × 7,443.51
4. Step 4: Simplify right side
   13,411.84x = 137,767,032.48
5. Step 5: Solve for x
   x = 137,767,032.48/13,411.84
6. Step 6: Final answer
   x = 10,272.05