Finding the Fourth Proportional to 6,873.12, 10,300.08 and 3,406.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,873.12 : 10,300.08 = 3,406.88 : x
2. Step 2: Convert to fraction form
   6,873.12/10,300.08 = 3,406.88/x
3. Step 3: Cross multiply
   6,873.12x = 10,300.08 × 3,406.88
4. Step 4: Simplify right side
   6,873.12x = 35,091,136.55
5. Step 5: Solve for x
   x = 35,091,136.55/6,873.12
6. Step 6: Final answer
   x = 5,105.56