Finding the Fourth Proportional to 9,352.17, 12,905.46 and 5,160.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,352.17 : 12,905.46 = 5,160.42 : x
2. Step 2: Convert to fraction form
   9,352.17/12,905.46 = 5,160.42/x
3. Step 3: Cross multiply
   9,352.17x = 12,905.46 × 5,160.42
4. Step 4: Simplify right side
   9,352.17x = 66,597,593.89
5. Step 5: Solve for x
   x = 66,597,593.89/9,352.17
6. Step 6: Final answer
   x = 7,121.08