Finding the Fourth Proportional to 12,795.72, 17,658.12 and 7,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,795.72 : 17,658.12 = 7,206.72 : x
2. Step 2: Convert to fraction form
   12,795.72/17,658.12 = 7,206.72/x
3. Step 3: Cross multiply
   12,795.72x = 17,658.12 × 7,206.72
4. Step 4: Simplify right side
   12,795.72x = 127,257,126.57
5. Step 5: Solve for x
   x = 127,257,126.57/12,795.72
6. Step 6: Final answer
   x = 9,945.29