Finding the Fourth Proportional to 8,851.61, 13,271.27 and 3,918.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,851.61 : 13,271.27 = 3,918.56 : x
2. Step 2: Convert to fraction form
   8,851.61/13,271.27 = 3,918.56/x
3. Step 3: Cross multiply
   8,851.61x = 13,271.27 × 3,918.56
4. Step 4: Simplify right side
   8,851.61x = 52,004,181.82
5. Step 5: Solve for x
   x = 52,004,181.82/8,851.61
6. Step 6: Final answer
   x = 5,875.11