Finding the Fourth Proportional to 7,111.31, 9,806.33 and 4,720.44

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.31 : 9,806.33 = 4,720.44 : x
2. Step 2: Convert to fraction form
   7,111.31/9,806.33 = 4,720.44/x
3. Step 3: Cross multiply
   7,111.31x = 9,806.33 × 4,720.44
4. Step 4: Simplify right side
   7,111.31x = 46,290,168.78
5. Step 5: Solve for x
   x = 46,290,168.78/7,111.31
6. Step 6: Final answer
   x = 6,509.37