Finding the Fourth Proportional to 12,813.33, 17,682.43 and 7,147.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,813.33 : 17,682.43 = 7,147.94 : x
2. Step 2: Convert to fraction form
   12,813.33/17,682.43 = 7,147.94/x
3. Step 3: Cross multiply
   12,813.33x = 17,682.43 × 7,147.94
4. Step 4: Simplify right side
   12,813.33x = 126,392,842.41
5. Step 5: Solve for x
   x = 126,392,842.41/12,813.33
6. Step 6: Final answer
   x = 9,864.17