Finding the Fourth Proportional to 10,935.69, 16,401.78 and 3,914.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,935.69 : 16,401.78 = 3,914.40 : x
2. Step 2: Convert to fraction form
   10,935.69/16,401.78 = 3,914.40/x
3. Step 3: Cross multiply
   10,935.69x = 16,401.78 × 3,914.40
4. Step 4: Simplify right side
   10,935.69x = 64,203,127.63
5. Step 5: Solve for x
   x = 64,203,127.63/10,935.69
6. Step 6: Final answer
   x = 5,870.97