Finding the Fourth Proportional to 9,776.28, 13,485.72 and 5,796.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,776.28 : 13,485.72 = 5,796.72 : x
2. Step 2: Convert to fraction form
   9,776.28/13,485.72 = 5,796.72/x
3. Step 3: Cross multiply
   9,776.28x = 13,485.72 × 5,796.72
4. Step 4: Simplify right side
   9,776.28x = 78,172,942.84
5. Step 5: Solve for x
   x = 78,172,942.84/9,776.28
6. Step 6: Final answer
   x = 7,996.18