Finding the Fourth Proportional to 12,453.75, 17,186.18 and 7,738.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,453.75 : 17,186.18 = 7,738.03 : x
2. Step 2: Convert to fraction form
   12,453.75/17,186.18 = 7,738.03/x
3. Step 3: Cross multiply
   12,453.75x = 17,186.18 × 7,738.03
4. Step 4: Simplify right side
   12,453.75x = 132,987,159.22
5. Step 5: Solve for x
   x = 132,987,159.22/12,453.75
6. Step 6: Final answer
   x = 10,678.48