Finding the Fourth Proportional to 7,111.18, 10,664.88 and 4,328.22

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.18 : 10,664.88 = 4,328.22 : x
2. Step 2: Convert to fraction form
   7,111.18/10,664.88 = 4,328.22/x
3. Step 3: Cross multiply
   7,111.18x = 10,664.88 × 4,328.22
4. Step 4: Simplify right side
   7,111.18x = 46,159,946.91
5. Step 5: Solve for x
   x = 46,159,946.91/7,111.18
6. Step 6: Final answer
   x = 6,491.18