Finding the Fourth Proportional to 7,111.54, 10,672.76 and 3,218.68

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.54 : 10,672.76 = 3,218.68 : x
2. Step 2: Convert to fraction form
   7,111.54/10,672.76 = 3,218.68/x
3. Step 3: Cross multiply
   7,111.54x = 10,672.76 × 3,218.68
4. Step 4: Simplify right side
   7,111.54x = 34,352,199.16
5. Step 5: Solve for x
   x = 34,352,199.16/7,111.54
6. Step 6: Final answer
   x = 4,830.49