Finding the Fourth Proportional to 6,902.78, 9,525.77 and 3,918.59

Step by Step Solution

1. Step 1: Write the proportion equation
   6,902.78 : 9,525.77 = 3,918.59 : x
2. Step 2: Convert to fraction form
   6,902.78/9,525.77 = 3,918.59/x
3. Step 3: Cross multiply
   6,902.78x = 9,525.77 × 3,918.59
4. Step 4: Simplify right side
   6,902.78x = 37,327,519.84
5. Step 5: Solve for x
   x = 37,327,519.84/6,902.78
6. Step 6: Final answer
   x = 5,407.61