Finding the Fourth Proportional to 7,111.02, 10,665.12 and 3,214.53

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.02 : 10,665.12 = 3,214.53 : x
2. Step 2: Convert to fraction form
   7,111.02/10,665.12 = 3,214.53/x
3. Step 3: Cross multiply
   7,111.02x = 10,665.12 × 3,214.53
4. Step 4: Simplify right side
   7,111.02x = 34,283,348.19
5. Step 5: Solve for x
   x = 34,283,348.19/7,111.02
6. Step 6: Final answer
   x = 4,821.16