Finding the Fourth Proportional to 12,799.43, 17,663.30 and 7,134.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,799.43 : 17,663.30 = 7,134.54 : x
2. Step 2: Convert to fraction form
   12,799.43/17,663.30 = 7,134.54/x
3. Step 3: Cross multiply
   12,799.43x = 17,663.30 × 7,134.54
4. Step 4: Simplify right side
   12,799.43x = 126,019,557.96
5. Step 5: Solve for x
   x = 126,019,557.96/12,799.43
6. Step 6: Final answer
   x = 9,845.71