Finding the Fourth Proportional to 9,701.31, 14,553.59 and 3,128.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,701.31 : 14,553.59 = 3,128.16 : x
2. Step 2: Convert to fraction form
   9,701.31/14,553.59 = 3,128.16/x
3. Step 3: Cross multiply
   9,701.31x = 14,553.59 × 3,128.16
4. Step 4: Simplify right side
   9,701.31x = 45,525,942.45
5. Step 5: Solve for x
   x = 45,525,942.45/9,701.31
6. Step 6: Final answer
   x = 4,692.76