Finding the Fourth Proportional to 5,131.31, 7,696.96 and 3,963.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,131.31 : 7,696.96 = 3,963.01 : x
2. Step 2: Convert to fraction form
   5,131.31/7,696.96 = 3,963.01/x
3. Step 3: Cross multiply
   5,131.31x = 7,696.96 × 3,963.01
4. Step 4: Simplify right side
   5,131.31x = 30,503,129.45
5. Step 5: Solve for x
   x = 30,503,129.45/5,131.31
6. Step 6: Final answer
   x = 5,944.51