Finding the Fourth Proportional to 12,798.96, 17,661.30 and 9,443.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,798.96 : 17,661.30 = 9,443.58 : x
2. Step 2: Convert to fraction form
   12,798.96/17,661.30 = 9,443.58/x
3. Step 3: Cross multiply
   12,798.96x = 17,661.30 × 9,443.58
4. Step 4: Simplify right side
   12,798.96x = 166,785,899.45
5. Step 5: Solve for x
   x = 166,785,899.45/12,798.96
6. Step 6: Final answer
   x = 13,031.21