Finding the Fourth Proportional to 6,742.78, 10,116.60 and 3,457.42

Step by Step Solution

1. Step 1: Write the proportion equation
   6,742.78 : 10,116.60 = 3,457.42 : x
2. Step 2: Convert to fraction form
   6,742.78/10,116.60 = 3,457.42/x
3. Step 3: Cross multiply
   6,742.78x = 10,116.60 × 3,457.42
4. Step 4: Simplify right side
   6,742.78x = 34,977,335.17
5. Step 5: Solve for x
   x = 34,977,335.17/6,742.78
6. Step 6: Final answer
   x = 5,187.38