Finding the Fourth Proportional to 8,728.02, 12,043.35 and 5,371.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,728.02 : 12,043.35 = 5,371.38 : x
2. Step 2: Convert to fraction form
   8,728.02/12,043.35 = 5,371.38/x
3. Step 3: Cross multiply
   8,728.02x = 12,043.35 × 5,371.38
4. Step 4: Simplify right side
   8,728.02x = 64,689,409.32
5. Step 5: Solve for x
   x = 64,689,409.32/8,728.02
6. Step 6: Final answer
   x = 7,411.69