Finding the Fourth Proportional to 12,559.49, 17,328.55 and 8,085.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,559.49 : 17,328.55 = 8,085.83 : x
2. Step 2: Convert to fraction form
   12,559.49/17,328.55 = 8,085.83/x
3. Step 3: Cross multiply
   12,559.49x = 17,328.55 × 8,085.83
4. Step 4: Simplify right side
   12,559.49x = 140,115,669.02
5. Step 5: Solve for x
   x = 140,115,669.02/12,559.49
6. Step 6: Final answer
   x = 11,156.16