Finding the Fourth Proportional to 10,731.67, 16,100.75 and 8,874.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,731.67 : 16,100.75 = 8,874.31 : x
2. Step 2: Convert to fraction form
   10,731.67/16,100.75 = 8,874.31/x
3. Step 3: Cross multiply
   10,731.67x = 16,100.75 × 8,874.31
4. Step 4: Simplify right side
   10,731.67x = 142,883,002.36
5. Step 5: Solve for x
   x = 142,883,002.36/10,731.67
6. Step 6: Final answer
   x = 13,314.14