Finding the Fourth Proportional to 12,711.06, 17,540.61 and 7,045.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,711.06 : 17,540.61 = 7,045.74 : x
2. Step 2: Convert to fraction form
   12,711.06/17,540.61 = 7,045.74/x
3. Step 3: Cross multiply
   12,711.06x = 17,540.61 × 7,045.74
4. Step 4: Simplify right side
   12,711.06x = 123,586,577.50
5. Step 5: Solve for x
   x = 123,586,577.50/12,711.06
6. Step 6: Final answer
   x = 9,722.76