Finding the Fourth Proportional to 10,960.76, 16,438.98 and 3,940.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,960.76 : 16,438.98 = 3,940.58 : x
2. Step 2: Convert to fraction form
   10,960.76/16,438.98 = 3,940.58/x
3. Step 3: Cross multiply
   10,960.76x = 16,438.98 × 3,940.58
4. Step 4: Simplify right side
   10,960.76x = 64,779,115.81
5. Step 5: Solve for x
   x = 64,779,115.81/10,960.76
6. Step 6: Final answer
   x = 5,910.09