Finding the Fourth Proportional to 12,710.30, 17,540.34 and 7,045.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,710.30 : 17,540.34 = 7,045.17 : x
2. Step 2: Convert to fraction form
   12,710.30/17,540.34 = 7,045.17/x
3. Step 3: Cross multiply
   12,710.30x = 17,540.34 × 7,045.17
4. Step 4: Simplify right side
   12,710.30x = 123,574,677.16
5. Step 5: Solve for x
   x = 123,574,677.16/12,710.30
6. Step 6: Final answer
   x = 9,722.40