Finding the Fourth Proportional to 5,100.18, 7,650.71 and 2,178.51

Step by Step Solution

1. Step 1: Write the proportion equation
   5,100.18 : 7,650.71 = 2,178.51 : x
2. Step 2: Convert to fraction form
   5,100.18/7,650.71 = 2,178.51/x
3. Step 3: Cross multiply
   5,100.18x = 7,650.71 × 2,178.51
4. Step 4: Simplify right side
   5,100.18x = 16,667,137.35
5. Step 5: Solve for x
   x = 16,667,137.35/5,100.18
6. Step 6: Final answer
   x = 3,267.95