Finding the Fourth Proportional to 10,641.68, 15,965.40 and 3,716.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,641.68 : 15,965.40 = 3,716.72 : x
2. Step 2: Convert to fraction form
   10,641.68/15,965.40 = 3,716.72/x
3. Step 3: Cross multiply
   10,641.68x = 15,965.40 × 3,716.72
4. Step 4: Simplify right side
   10,641.68x = 59,338,921.49
5. Step 5: Solve for x
   x = 59,338,921.49/10,641.68
6. Step 6: Final answer
   x = 5,576.09