Finding the Fourth Proportional to 8,721.75, 12,039.69 and 5,892.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,721.75 : 12,039.69 = 5,892.96 : x
2. Step 2: Convert to fraction form
   8,721.75/12,039.69 = 5,892.96/x
3. Step 3: Cross multiply
   8,721.75x = 12,039.69 × 5,892.96
4. Step 4: Simplify right side
   8,721.75x = 70,949,411.58
5. Step 5: Solve for x
   x = 70,949,411.58/8,721.75
6. Step 6: Final answer
   x = 8,134.77