Finding the Fourth Proportional to 9,193.47, 12,687.72 and 5,160.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,193.47 : 12,687.72 = 5,160.69 : x
2. Step 2: Convert to fraction form
   9,193.47/12,687.72 = 5,160.69/x
3. Step 3: Cross multiply
   9,193.47x = 12,687.72 × 5,160.69
4. Step 4: Simplify right side
   9,193.47x = 65,477,389.73
5. Step 5: Solve for x
   x = 65,477,389.73/9,193.47
6. Step 6: Final answer
   x = 7,122.16