Finding the Fourth Proportional to 9,679.92, 13,357.72 and 5,700.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,679.92 : 13,357.72 = 5,700.12 : x
2. Step 2: Convert to fraction form
   9,679.92/13,357.72 = 5,700.12/x
3. Step 3: Cross multiply
   9,679.92x = 13,357.72 × 5,700.12
4. Step 4: Simplify right side
   9,679.92x = 76,140,606.93
5. Step 5: Solve for x
   x = 76,140,606.93/9,679.92
6. Step 6: Final answer
   x = 7,865.83