Finding the Fourth Proportional to 8,726.18, 12,073.80 and 7,609.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,726.18 : 12,073.80 = 7,609.43 : x
2. Step 2: Convert to fraction form
   8,726.18/12,073.80 = 7,609.43/x
3. Step 3: Cross multiply
   8,726.18x = 12,073.80 × 7,609.43
4. Step 4: Simplify right side
   8,726.18x = 91,874,675.57
5. Step 5: Solve for x
   x = 91,874,675.57/8,726.18
6. Step 6: Final answer
   x = 10,528.63