Finding the Fourth Proportional to 8,851.82, 13,271.51 and 3,918.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,851.82 : 13,271.51 = 3,918.78 : x
2. Step 2: Convert to fraction form
   8,851.82/13,271.51 = 3,918.78/x
3. Step 3: Cross multiply
   8,851.82x = 13,271.51 × 3,918.78
4. Step 4: Simplify right side
   8,851.82x = 52,008,137.75
5. Step 5: Solve for x
   x = 52,008,137.75/8,851.82
6. Step 6: Final answer
   x = 5,875.42