Finding the Fourth Proportional to 6,873.39, 10,302.80 and 2,978.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,873.39 : 10,302.80 = 2,978.10 : x
2. Step 2: Convert to fraction form
   6,873.39/10,302.80 = 2,978.10/x
3. Step 3: Cross multiply
   6,873.39x = 10,302.80 × 2,978.10
4. Step 4: Simplify right side
   6,873.39x = 30,682,753.79
5. Step 5: Solve for x
   x = 30,682,753.79/6,873.39
6. Step 6: Final answer
   x = 4,463.99