Finding the Fourth Proportional to 12,798.35, 17,663.15 and 7,133.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,798.35 : 17,663.15 = 7,133.61 : x
2. Step 2: Convert to fraction form
   12,798.35/17,663.15 = 7,133.61/x
3. Step 3: Cross multiply
   12,798.35x = 17,663.15 × 7,133.61
4. Step 4: Simplify right side
   12,798.35x = 126,002,023.47
5. Step 5: Solve for x
   x = 126,002,023.47/12,798.35
6. Step 6: Final answer
   x = 9,845.18