Finding the Fourth Proportional to 9,719.46, 13,410.90 and 5,739.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,719.46 : 13,410.90 = 5,739.12 : x
2. Step 2: Convert to fraction form
   9,719.46/13,410.90 = 5,739.12/x
3. Step 3: Cross multiply
   9,719.46x = 13,410.90 × 5,739.12
4. Step 4: Simplify right side
   9,719.46x = 76,966,764.41
5. Step 5: Solve for x
   x = 76,966,764.41/9,719.46
6. Step 6: Final answer
   x = 7,918.83