Finding the Fourth Proportional to 5,774.17, 7,964.27 and 5,687.77

Step by Step Solution

1. Step 1: Write the proportion equation
   5,774.17 : 7,964.27 = 5,687.77 : x
2. Step 2: Convert to fraction form
   5,774.17/7,964.27 = 5,687.77/x
3. Step 3: Cross multiply
   5,774.17x = 7,964.27 × 5,687.77
4. Step 4: Simplify right side
   5,774.17x = 45,298,907.54
5. Step 5: Solve for x
   x = 45,298,907.54/5,774.17
6. Step 6: Final answer
   x = 7,845.09