Finding the Fourth Proportional to 5,271.82, 7,890.56 and 3,884.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,271.82 : 7,890.56 = 3,884.60 : x
2. Step 2: Convert to fraction form
   5,271.82/7,890.56 = 3,884.60/x
3. Step 3: Cross multiply
   5,271.82x = 7,890.56 × 3,884.60
4. Step 4: Simplify right side
   5,271.82x = 30,651,669.38
5. Step 5: Solve for x
   x = 30,651,669.38/5,271.82
6. Step 6: Final answer
   x = 5,814.25