Finding the Fourth Proportional to 7,111.29, 10,672.38 and 3,218.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.29 : 10,672.38 = 3,218.43 : x
2. Step 2: Convert to fraction form
   7,111.29/10,672.38 = 3,218.43/x
3. Step 3: Cross multiply
   7,111.29x = 10,672.38 × 3,218.43
4. Step 4: Simplify right side
   7,111.29x = 34,348,307.96
5. Step 5: Solve for x
   x = 34,348,307.96/7,111.29
6. Step 6: Final answer
   x = 4,830.11