Finding the Fourth Proportional to 6,804.72, 10,214.28 and 5,720.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,804.72 : 10,214.28 = 5,720.76 : x
2. Step 2: Convert to fraction form
   6,804.72/10,214.28 = 5,720.76/x
3. Step 3: Cross multiply
   6,804.72x = 10,214.28 × 5,720.76
4. Step 4: Simplify right side
   6,804.72x = 58,433,444.45
5. Step 5: Solve for x
   x = 58,433,444.45/6,804.72
6. Step 6: Final answer
   x = 8,587.19