Finding the Fourth Proportional to 13,443.46, 18,551.97 and 7,475.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,443.46 : 18,551.97 = 7,475.18 : x
2. Step 2: Convert to fraction form
   13,443.46/18,551.97 = 7,475.18/x
3. Step 3: Cross multiply
   13,443.46x = 18,551.97 × 7,475.18
4. Step 4: Simplify right side
   13,443.46x = 138,679,222.34
5. Step 5: Solve for x
   x = 138,679,222.34/13,443.46
6. Step 6: Final answer
   x = 10,315.74