Finding the Fourth Proportional to 9,238.72, 12,749.64 and 5,512

Step by Step Solution

1. Step 1: Write the proportion equation
   9,238.72 : 12,749.64 = 5,512 : x
2. Step 2: Convert to fraction form
   9,238.72/12,749.64 = 5,512/x
3. Step 3: Cross multiply
   9,238.72x = 12,749.64 × 5,512
4. Step 4: Simplify right side
   9,238.72x = 70,276,015.68
5. Step 5: Solve for x
   x = 70,276,015.68/9,238.72
6. Step 6: Final answer
   x = 7,606.68