Finding the Fourth Proportional to 10,238.84, 15,388.58 and 8,495.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,238.84 : 15,388.58 = 8,495.16 : x
2. Step 2: Convert to fraction form
   10,238.84/15,388.58 = 8,495.16/x
3. Step 3: Cross multiply
   10,238.84x = 15,388.58 × 8,495.16
4. Step 4: Simplify right side
   10,238.84x = 130,728,449.27
5. Step 5: Solve for x
   x = 130,728,449.27/10,238.84
6. Step 6: Final answer
   x = 12,767.90