Finding the Fourth Proportional to 8,002.80, 12,021.21 and 4,884.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,002.80 : 12,021.21 = 4,884.30 : x
2. Step 2: Convert to fraction form
   8,002.80/12,021.21 = 4,884.30/x
3. Step 3: Cross multiply
   8,002.80x = 12,021.21 × 4,884.30
4. Step 4: Simplify right side
   8,002.80x = 58,715,196.00
5. Step 5: Solve for x
   x = 58,715,196.00/8,002.80
6. Step 6: Final answer
   x = 7,336.83