Finding the Fourth Proportional to 5,761.61, 7,946.78 and 3,969.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,761.61 : 7,946.78 = 3,969.69 : x
2. Step 2: Convert to fraction form
   5,761.61/7,946.78 = 3,969.69/x
3. Step 3: Cross multiply
   5,761.61x = 7,946.78 × 3,969.69
4. Step 4: Simplify right side
   5,761.61x = 31,546,263.02
5. Step 5: Solve for x
   x = 31,546,263.02/5,761.61
6. Step 6: Final answer
   x = 5,475.25