Finding the Fourth Proportional to 9,603.72, 14,383.98 and 7,142.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,603.72 : 14,383.98 = 7,142.76 : x
2. Step 2: Convert to fraction form
   9,603.72/14,383.98 = 7,142.76/x
3. Step 3: Cross multiply
   9,603.72x = 14,383.98 × 7,142.76
4. Step 4: Simplify right side
   9,603.72x = 102,741,316.98
5. Step 5: Solve for x
   x = 102,741,316.98/9,603.72
6. Step 6: Final answer
   x = 10,698.08