Finding the Fourth Proportional to 8,714.98, 12,028.59 and 5,731.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,714.98 : 12,028.59 = 5,731.09 : x
2. Step 2: Convert to fraction form
   8,714.98/12,028.59 = 5,731.09/x
3. Step 3: Cross multiply
   8,714.98x = 12,028.59 × 5,731.09
4. Step 4: Simplify right side
   8,714.98x = 68,936,931.86
5. Step 5: Solve for x
   x = 68,936,931.86/8,714.98
6. Step 6: Final answer
   x = 7,910.17