Finding the Fourth Proportional to 7,749.50, 10,694.42 and 4,212.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,749.50 : 10,694.42 = 4,212.72 : x
2. Step 2: Convert to fraction form
   7,749.50/10,694.42 = 4,212.72/x
3. Step 3: Cross multiply
   7,749.50x = 10,694.42 × 4,212.72
4. Step 4: Simplify right side
   7,749.50x = 45,052,607.55
5. Step 5: Solve for x
   x = 45,052,607.55/7,749.50
6. Step 6: Final answer
   x = 5,813.62