Finding the Fourth Proportional to 10,581.48, 15,733.72 and 10,138.58

Step by Step Solution

1. Step 1: Write the proportion equation
   10,581.48 : 15,733.72 = 10,138.58 : x
2. Step 2: Convert to fraction form
   10,581.48/15,733.72 = 10,138.58/x
3. Step 3: Cross multiply
   10,581.48x = 15,733.72 × 10,138.58
4. Step 4: Simplify right side
   10,581.48x = 159,517,578.92
5. Step 5: Solve for x
   x = 159,517,578.92/10,581.48
6. Step 6: Final answer
   x = 15,075.17