Finding the Fourth Proportional to 13,731.06, 18,948.96 and 7,443.42

Step by Step Solution

1. Step 1: Write the proportion equation
   13,731.06 : 18,948.96 = 7,443.42 : x
2. Step 2: Convert to fraction form
   13,731.06/18,948.96 = 7,443.42/x
3. Step 3: Cross multiply
   13,731.06x = 18,948.96 × 7,443.42
4. Step 4: Simplify right side
   13,731.06x = 141,045,067.84
5. Step 5: Solve for x
   x = 141,045,067.84/13,731.06
6. Step 6: Final answer
   x = 10,271.97