Finding the Fourth Proportional to 10,872.73, 15,002.31 and 10,319.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,872.73 : 15,002.31 = 10,319.10 : x
2. Step 2: Convert to fraction form
   10,872.73/15,002.31 = 10,319.10/x
3. Step 3: Cross multiply
   10,872.73x = 15,002.31 × 10,319.10
4. Step 4: Simplify right side
   10,872.73x = 154,810,337.12
5. Step 5: Solve for x
   x = 154,810,337.12/10,872.73
6. Step 6: Final answer
   x = 14,238.41