Finding the Fourth Proportional to 6,900.30, 9,524.56 and 3,918.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,900.30 : 9,524.56 = 3,918.12 : x
2. Step 2: Convert to fraction form
   6,900.30/9,524.56 = 3,918.12/x
3. Step 3: Cross multiply
   6,900.30x = 9,524.56 × 3,918.12
4. Step 4: Simplify right side
   6,900.30x = 37,318,369.03
5. Step 5: Solve for x
   x = 37,318,369.03/6,900.30
6. Step 6: Final answer
   x = 5,408.22