Finding the Fourth Proportional to 12,710.86, 17,540.10 and 7,045.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,710.86 : 17,540.10 = 7,045.07 : x
2. Step 2: Convert to fraction form
   12,710.86/17,540.10 = 7,045.07/x
3. Step 3: Cross multiply
   12,710.86x = 17,540.10 × 7,045.07
4. Step 4: Simplify right side
   12,710.86x = 123,571,144.61
5. Step 5: Solve for x
   x = 123,571,144.61/12,710.86
6. Step 6: Final answer
   x = 9,721.70