Finding the Fourth Proportional to 4,980.69, 7,424.16 and 4,821.53

Step by Step Solution

1. Step 1: Write the proportion equation
   4,980.69 : 7,424.16 = 4,821.53 : x
2. Step 2: Convert to fraction form
   4,980.69/7,424.16 = 4,821.53/x
3. Step 3: Cross multiply
   4,980.69x = 7,424.16 × 4,821.53
4. Step 4: Simplify right side
   4,980.69x = 35,795,754.96
5. Step 5: Solve for x
   x = 35,795,754.96/4,980.69
6. Step 6: Final answer
   x = 7,186.91