Finding the Fourth Proportional to 13,731.56, 18,949.56 and 7,443.92

Step by Step Solution

1. Step 1: Write the proportion equation
   13,731.56 : 18,949.56 = 7,443.92 : x
2. Step 2: Convert to fraction form
   13,731.56/18,949.56 = 7,443.92/x
3. Step 3: Cross multiply
   13,731.56x = 18,949.56 × 7,443.92
4. Step 4: Simplify right side
   13,731.56x = 141,059,008.68
5. Step 5: Solve for x
   x = 141,059,008.68/13,731.56
6. Step 6: Final answer
   x = 10,272.61