Finding the Fourth Proportional to 8,538.72, 12,809.20 and 3,343.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,538.72 : 12,809.20 = 3,343.92 : x
2. Step 2: Convert to fraction form
   8,538.72/12,809.20 = 3,343.92/x
3. Step 3: Cross multiply
   8,538.72x = 12,809.20 × 3,343.92
4. Step 4: Simplify right side
   8,538.72x = 42,832,940.06
5. Step 5: Solve for x
   x = 42,832,940.06/8,538.72
6. Step 6: Final answer
   x = 5,016.32