Finding the Fourth Proportional to 12,857.55, 17,743.50 and 7,483.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,857.55 : 17,743.50 = 7,483.18 : x
2. Step 2: Convert to fraction form
   12,857.55/17,743.50 = 7,483.18/x
3. Step 3: Cross multiply
   12,857.55x = 17,743.50 × 7,483.18
4. Step 4: Simplify right side
   12,857.55x = 132,777,804.33
5. Step 5: Solve for x
   x = 132,777,804.33/12,857.55
6. Step 6: Final answer
   x = 10,326.84