Finding the Fourth Proportional to 12,731, 17,567.34 and 7,065.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,731 : 17,567.34 = 7,065.56 : x
2. Step 2: Convert to fraction form
   12,731/17,567.34 = 7,065.56/x
3. Step 3: Cross multiply
   12,731x = 17,567.34 × 7,065.56
4. Step 4: Simplify right side
   12,731x = 124,123,094.81
5. Step 5: Solve for x
   x = 124,123,094.81/12,731
6. Step 6: Final answer
   x = 9,749.67