Finding the Fourth Proportional to 10,085.31, 15,128.77 and 3,065.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,085.31 : 15,128.77 = 3,065.94 : x
2. Step 2: Convert to fraction form
   10,085.31/15,128.77 = 3,065.94/x
3. Step 3: Cross multiply
   10,085.31x = 15,128.77 × 3,065.94
4. Step 4: Simplify right side
   10,085.31x = 46,383,901.09
5. Step 5: Solve for x
   x = 46,383,901.09/10,085.31
6. Step 6: Final answer
   x = 4,599.15