Finding the Fourth Proportional to 10,131.25, 15,123.55 and 8,753.44

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.25 : 15,123.55 = 8,753.44 : x
2. Step 2: Convert to fraction form
   10,131.25/15,123.55 = 8,753.44/x
3. Step 3: Cross multiply
   10,131.25x = 15,123.55 × 8,753.44
4. Step 4: Simplify right side
   10,131.25x = 132,383,087.51
5. Step 5: Solve for x
   x = 132,383,087.51/10,131.25
6. Step 6: Final answer
   x = 13,066.81