Finding the Fourth Proportional to 13,315.73, 18,375.72 and 7,347.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,315.73 : 18,375.72 = 7,347.41 : x
2. Step 2: Convert to fraction form
   13,315.73/18,375.72 = 7,347.41/x
3. Step 3: Cross multiply
   13,315.73x = 18,375.72 × 7,347.41
4. Step 4: Simplify right side
   13,315.73x = 135,013,948.89
5. Step 5: Solve for x
   x = 135,013,948.89/13,315.73
6. Step 6: Final answer
   x = 10,139.43