Finding the Fourth Proportional to 12,710.56, 17,540.35 and 7,045.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,710.56 : 17,540.35 = 7,045.28 : x
2. Step 2: Convert to fraction form
   12,710.56/17,540.35 = 7,045.28/x
3. Step 3: Cross multiply
   12,710.56x = 17,540.35 × 7,045.28
4. Step 4: Simplify right side
   12,710.56x = 123,576,703.29
5. Step 5: Solve for x
   x = 123,576,703.29/12,710.56
6. Step 6: Final answer
   x = 9,722.37