Finding the Fourth Proportional to 9,856.24, 13,601.50 and 5,380.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,856.24 : 13,601.50 = 5,380.18 : x
2. Step 2: Convert to fraction form
   9,856.24/13,601.50 = 5,380.18/x
3. Step 3: Cross multiply
   9,856.24x = 13,601.50 × 5,380.18
4. Step 4: Simplify right side
   9,856.24x = 73,178,470.82
5. Step 5: Solve for x
   x = 73,178,470.82/9,856.24
6. Step 6: Final answer
   x = 7,424.58