Finding the Fourth Proportional to 5,774.98, 8,665.78 and 5,728.00

Step by Step Solution

1. Step 1: Write the proportion equation
   5,774.98 : 8,665.78 = 5,728.00 : x
2. Step 2: Convert to fraction form
   5,774.98/8,665.78 = 5,728.00/x
3. Step 3: Cross multiply
   5,774.98x = 8,665.78 × 5,728.00
4. Step 4: Simplify right side
   5,774.98x = 49,637,551.86
5. Step 5: Solve for x
   x = 49,637,551.86/5,774.98
6. Step 6: Final answer
   x = 8,595.28