Finding the Fourth Proportional to 10,928.16, 16,394.76 and 3,136.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,928.16 : 16,394.76 = 3,136.86 : x
2. Step 2: Convert to fraction form
   10,928.16/16,394.76 = 3,136.86/x
3. Step 3: Cross multiply
   10,928.16x = 16,394.76 × 3,136.86
4. Step 4: Simplify right side
   10,928.16x = 51,428,066.85
5. Step 5: Solve for x
   x = 51,428,066.85/10,928.16
6. Step 6: Final answer
   x = 4,706.01