Finding the Fourth Proportional to 6,846.76, 9,417.18 and 5,643.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,846.76 : 9,417.18 = 5,643.28 : x
2. Step 2: Convert to fraction form
   6,846.76/9,417.18 = 5,643.28/x
3. Step 3: Cross multiply
   6,846.76x = 9,417.18 × 5,643.28
4. Step 4: Simplify right side
   6,846.76x = 53,143,783.55
5. Step 5: Solve for x
   x = 53,143,783.55/6,846.76
6. Step 6: Final answer
   x = 7,761.89