Finding the Fourth Proportional to 5,143.42, 7,097.79 and 2,905.53

Step by Step Solution

1. Step 1: Write the proportion equation
   5,143.42 : 7,097.79 = 2,905.53 : x
2. Step 2: Convert to fraction form
   5,143.42/7,097.79 = 2,905.53/x
3. Step 3: Cross multiply
   5,143.42x = 7,097.79 × 2,905.53
4. Step 4: Simplify right side
   5,143.42x = 20,622,841.78
5. Step 5: Solve for x
   x = 20,622,841.78/5,143.42
6. Step 6: Final answer
   x = 4,009.56