Finding the Fourth Proportional to 12,710.64, 17,540.42 and 7,045.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,710.64 : 17,540.42 = 7,045.34 : x
2. Step 2: Convert to fraction form
   12,710.64/17,540.42 = 7,045.34/x
3. Step 3: Cross multiply
   12,710.64x = 17,540.42 × 7,045.34
4. Step 4: Simplify right side
   12,710.64x = 123,578,222.64
5. Step 5: Solve for x
   x = 123,578,222.64/12,710.64
6. Step 6: Final answer
   x = 9,722.42