Finding the Fourth Proportional to 5,145.35, 7,100.54 and 2,907.95

Step by Step Solution

1. Step 1: Write the proportion equation
   5,145.35 : 7,100.54 = 2,907.95 : x
2. Step 2: Convert to fraction form
   5,145.35/7,100.54 = 2,907.95/x
3. Step 3: Cross multiply
   5,145.35x = 7,100.54 × 2,907.95
4. Step 4: Simplify right side
   5,145.35x = 20,648,000.75
5. Step 5: Solve for x
   x = 20,648,000.75/5,145.35
6. Step 6: Final answer
   x = 4,012.94