Finding the Fourth Proportional to 12,708.31, 17,536.44 and 7,043.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,708.31 : 17,536.44 = 7,043.31 : x
2. Step 2: Convert to fraction form
   12,708.31/17,536.44 = 7,043.31/x
3. Step 3: Cross multiply
   12,708.31x = 17,536.44 × 7,043.31
4. Step 4: Simplify right side
   12,708.31x = 123,514,583.22
5. Step 5: Solve for x
   x = 123,514,583.22/12,708.31
6. Step 6: Final answer
   x = 9,719.20