Finding the Fourth Proportional to 9,169.94, 12,654.42 and 5,191.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,169.94 : 12,654.42 = 5,191.04 : x
2. Step 2: Convert to fraction form
   9,169.94/12,654.42 = 5,191.04/x
3. Step 3: Cross multiply
   9,169.94x = 12,654.42 × 5,191.04
4. Step 4: Simplify right side
   9,169.94x = 65,689,600.40
5. Step 5: Solve for x
   x = 65,689,600.40/9,169.94
6. Step 6: Final answer
   x = 7,163.58