Finding the Fourth Proportional to 5,150.55, 7,107.69 and 2,912.35

Step by Step Solution

1. Step 1: Write the proportion equation
   5,150.55 : 7,107.69 = 2,912.35 : x
2. Step 2: Convert to fraction form
   5,150.55/7,107.69 = 2,912.35/x
3. Step 3: Cross multiply
   5,150.55x = 7,107.69 × 2,912.35
4. Step 4: Simplify right side
   5,150.55x = 20,700,080.97
5. Step 5: Solve for x
   x = 20,700,080.97/5,150.55
6. Step 6: Final answer
   x = 4,019.00