Finding the Fourth Proportional to 7,072.60, 10,608.55 and 2,912.55

Step by Step Solution

1. Step 1: Write the proportion equation
   7,072.60 : 10,608.55 = 2,912.55 : x
2. Step 2: Convert to fraction form
   7,072.60/10,608.55 = 2,912.55/x
3. Step 3: Cross multiply
   7,072.60x = 10,608.55 × 2,912.55
4. Step 4: Simplify right side
   7,072.60x = 30,897,932.30
5. Step 5: Solve for x
   x = 30,897,932.30/7,072.60
6. Step 6: Final answer
   x = 4,368.68