Finding the Fourth Proportional to 7,244.73, 10,870.21 and 3,912.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,244.73 : 10,870.21 = 3,912.31 : x
2. Step 2: Convert to fraction form
   7,244.73/10,870.21 = 3,912.31/x
3. Step 3: Cross multiply
   7,244.73x = 10,870.21 × 3,912.31
4. Step 4: Simplify right side
   7,244.73x = 42,527,631.29
5. Step 5: Solve for x
   x = 42,527,631.29/7,244.73
6. Step 6: Final answer
   x = 5,870.15