Finding the Fourth Proportional to 12,538.06, 17,310.39 and 8,069.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,538.06 : 17,310.39 = 8,069.57 : x
2. Step 2: Convert to fraction form
   12,538.06/17,310.39 = 8,069.57/x
3. Step 3: Cross multiply
   12,538.06x = 17,310.39 × 8,069.57
4. Step 4: Simplify right side
   12,538.06x = 139,687,363.48
5. Step 5: Solve for x
   x = 139,687,363.48/12,538.06
6. Step 6: Final answer
   x = 11,141.07