Finding the Fourth Proportional to 5,242.69, 7,234.71 and 2,884.81

Step by Step Solution

1. Step 1: Write the proportion equation
   5,242.69 : 7,234.71 = 2,884.81 : x
2. Step 2: Convert to fraction form
   5,242.69/7,234.71 = 2,884.81/x
3. Step 3: Cross multiply
   5,242.69x = 7,234.71 × 2,884.81
4. Step 4: Simplify right side
   5,242.69x = 20,870,763.76
5. Step 5: Solve for x
   x = 20,870,763.76/5,242.69
6. Step 6: Final answer
   x = 3,980.93