Finding the Fourth Proportional to 4,884.30, 7,321.59 and 2,420.89

Step by Step Solution

1. Step 1: Write the proportion equation
   4,884.30 : 7,321.59 = 2,420.89 : x
2. Step 2: Convert to fraction form
   4,884.30/7,321.59 = 2,420.89/x
3. Step 3: Cross multiply
   4,884.30x = 7,321.59 × 2,420.89
4. Step 4: Simplify right side
   4,884.30x = 17,724,745.71
5. Step 5: Solve for x
   x = 17,724,745.71/4,884.30
6. Step 6: Final answer
   x = 3,628.92