Finding the Fourth Proportional to 10,309.31, 15,440.73 and 4,754.33

Step by Step Solution

1. Step 1: Write the proportion equation
   10,309.31 : 15,440.73 = 4,754.33 : x
2. Step 2: Convert to fraction form
   10,309.31/15,440.73 = 4,754.33/x
3. Step 3: Cross multiply
   10,309.31x = 15,440.73 × 4,754.33
4. Step 4: Simplify right side
   10,309.31x = 73,410,288.73
5. Step 5: Solve for x
   x = 73,410,288.73/10,309.31
6. Step 6: Final answer
   x = 7,120.78