Finding the Fourth Proportional to 13,411.74, 18,507.84 and 7,443.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,411.74 : 18,507.84 = 7,443.25 : x
2. Step 2: Convert to fraction form
   13,411.74/18,507.84 = 7,443.25/x
3. Step 3: Cross multiply
   13,411.74x = 18,507.84 × 7,443.25
4. Step 4: Simplify right side
   13,411.74x = 137,758,521.82
5. Step 5: Solve for x
   x = 137,758,521.82/13,411.74
6. Step 6: Final answer
   x = 10,271.49