Finding the Fourth Proportional to 9,718.50, 13,410.99 and 5,738.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,718.50 : 13,410.99 = 5,738.70 : x
2. Step 2: Convert to fraction form
   9,718.50/13,410.99 = 5,738.70/x
3. Step 3: Cross multiply
   9,718.50x = 13,410.99 × 5,738.70
4. Step 4: Simplify right side
   9,718.50x = 76,961,648.31
5. Step 5: Solve for x
   x = 76,961,648.31/9,718.50
6. Step 6: Final answer
   x = 7,919.09