Finding the Fourth Proportional to 8,920.17, 12,298.65 and 5,727.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,920.17 : 12,298.65 = 5,727.83 : x
2. Step 2: Convert to fraction form
   8,920.17/12,298.65 = 5,727.83/x
3. Step 3: Cross multiply
   8,920.17x = 12,298.65 × 5,727.83
4. Step 4: Simplify right side
   8,920.17x = 70,444,514.94
5. Step 5: Solve for x
   x = 70,444,514.94/8,920.17
6. Step 6: Final answer
   x = 7,897.22