Finding the Fourth Proportional to 10,725.74, 16,071.06 and 10,315.67

Step by Step Solution

1. Step 1: Write the proportion equation
   10,725.74 : 16,071.06 = 10,315.67 : x
2. Step 2: Convert to fraction form
   10,725.74/16,071.06 = 10,315.67/x
3. Step 3: Cross multiply
   10,725.74x = 16,071.06 × 10,315.67
4. Step 4: Simplify right side
   10,725.74x = 165,783,671.15
5. Step 5: Solve for x
   x = 165,783,671.15/10,725.74
6. Step 6: Final answer
   x = 15,456.63