Finding the Fourth Proportional to 5,145.42, 7,100.96 and 2,907.39

Step by Step Solution

1. Step 1: Write the proportion equation
   5,145.42 : 7,100.96 = 2,907.39 : x
2. Step 2: Convert to fraction form
   5,145.42/7,100.96 = 2,907.39/x
3. Step 3: Cross multiply
   5,145.42x = 7,100.96 × 2,907.39
4. Step 4: Simplify right side
   5,145.42x = 20,645,277.85
5. Step 5: Solve for x
   x = 20,645,277.85/5,145.42
6. Step 6: Final answer
   x = 4,012.36