Finding the Fourth Proportional to 7,111.32, 9,815.07 and 4,456.81

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.32 : 9,815.07 = 4,456.81 : x
2. Step 2: Convert to fraction form
   7,111.32/9,815.07 = 4,456.81/x
3. Step 3: Cross multiply
   7,111.32x = 9,815.07 × 4,456.81
4. Step 4: Simplify right side
   7,111.32x = 43,743,902.13
5. Step 5: Solve for x
   x = 43,743,902.13/7,111.32
6. Step 6: Final answer
   x = 6,151.31