Finding the Fourth Proportional to 10,930.74, 16,399.54 and 3,910.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,930.74 : 16,399.54 = 3,910.58 : x
2. Step 2: Convert to fraction form
   10,930.74/16,399.54 = 3,910.58/x
3. Step 3: Cross multiply
   10,930.74x = 16,399.54 × 3,910.58
4. Step 4: Simplify right side
   10,930.74x = 64,131,631.14
5. Step 5: Solve for x
   x = 64,131,631.14/10,930.74
6. Step 6: Final answer
   x = 5,867.09