Finding the Fourth Proportional to 10,874.36, 15,004.55 and 10,320.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,874.36 : 15,004.55 = 10,320.72 : x
2. Step 2: Convert to fraction form
   10,874.36/15,004.55 = 10,320.72/x
3. Step 3: Cross multiply
   10,874.36x = 15,004.55 × 10,320.72
4. Step 4: Simplify right side
   10,874.36x = 154,857,707.67
5. Step 5: Solve for x
   x = 154,857,707.67/10,874.36
6. Step 6: Final answer
   x = 14,240.63