Finding the Fourth Proportional to 13,731.10, 18,948.96 and 7,443.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,731.10 : 18,948.96 = 7,443.48 : x
2. Step 2: Convert to fraction form
   13,731.10/18,948.96 = 7,443.48/x
3. Step 3: Cross multiply
   13,731.10x = 18,948.96 × 7,443.48
4. Step 4: Simplify right side
   13,731.10x = 141,046,204.78
5. Step 5: Solve for x
   x = 141,046,204.78/13,731.10
6. Step 6: Final answer
   x = 10,272.03