Finding the Fourth Proportional to 10,938.96, 16,411.32 and 3,919.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,938.96 : 16,411.32 = 3,919.68 : x
2. Step 2: Convert to fraction form
   10,938.96/16,411.32 = 3,919.68/x
3. Step 3: Cross multiply
   10,938.96x = 16,411.32 × 3,919.68
4. Step 4: Simplify right side
   10,938.96x = 64,327,122.78
5. Step 5: Solve for x
   x = 64,327,122.78/10,938.96
6. Step 6: Final answer
   x = 5,880.55