Finding the Fourth Proportional to 6,834.16, 10,242.96 and 3,131.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,834.16 : 10,242.96 = 3,131.20 : x
2. Step 2: Convert to fraction form
   6,834.16/10,242.96 = 3,131.20/x
3. Step 3: Cross multiply
   6,834.16x = 10,242.96 × 3,131.20
4. Step 4: Simplify right side
   6,834.16x = 32,072,756.35
5. Step 5: Solve for x
   x = 32,072,756.35/6,834.16
6. Step 6: Final answer
   x = 4,693.01