Finding the Fourth Proportional to 12,843.31, 17,723.87 and 7,254.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,843.31 : 17,723.87 = 7,254.31 : x
2. Step 2: Convert to fraction form
   12,843.31/17,723.87 = 7,254.31/x
3. Step 3: Cross multiply
   12,843.31x = 17,723.87 × 7,254.31
4. Step 4: Simplify right side
   12,843.31x = 128,574,447.38
5. Step 5: Solve for x
   x = 128,574,447.38/12,843.31
6. Step 6: Final answer
   x = 10,011.01