Finding the Fourth Proportional to 5,145.43, 7,100.27 and 2,907.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,145.43 : 7,100.27 = 2,907.50 : x
2. Step 2: Convert to fraction form
   5,145.43/7,100.27 = 2,907.50/x
3. Step 3: Cross multiply
   5,145.43x = 7,100.27 × 2,907.50
4. Step 4: Simplify right side
   5,145.43x = 20,644,035.03
5. Step 5: Solve for x
   x = 20,644,035.03/5,145.43
6. Step 6: Final answer
   x = 4,012.11