Finding the Fourth Proportional to 23,085.87, 31,856.58 and 13,016.79

Step by Step Solution

1. Step 1: Write the proportion equation
   23,085.87 : 31,856.58 = 13,016.79 : x
2. Step 2: Convert to fraction form
   23,085.87/31,856.58 = 13,016.79/x
3. Step 3: Cross multiply
   23,085.87x = 31,856.58 × 13,016.79
4. Step 4: Simplify right side
   23,085.87x = 414,670,411.98
5. Step 5: Solve for x
   x = 414,670,411.98/23,085.87
6. Step 6: Final answer
   x = 17,962.09