Finding the Fourth Proportional to 10,640.91, 15,963.71 and 3,245.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,640.91 : 15,963.71 = 3,245.94 : x
2. Step 2: Convert to fraction form
   10,640.91/15,963.71 = 3,245.94/x
3. Step 3: Cross multiply
   10,640.91x = 15,963.71 × 3,245.94
4. Step 4: Simplify right side
   10,640.91x = 51,817,170.39
5. Step 5: Solve for x
   x = 51,817,170.39/10,640.91
6. Step 6: Final answer
   x = 4,869.62