Finding the Fourth Proportional to 11,628.76, 16,020.57 and 8,085.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,628.76 : 16,020.57 = 8,085.82 : x
2. Step 2: Convert to fraction form
   11,628.76/16,020.57 = 8,085.82/x
3. Step 3: Cross multiply
   11,628.76x = 16,020.57 × 8,085.82
4. Step 4: Simplify right side
   11,628.76x = 129,539,445.32
5. Step 5: Solve for x
   x = 129,539,445.32/11,628.76
6. Step 6: Final answer
   x = 11,139.58