Finding the Fourth Proportional to 3,916.32, 5,404.52 and 2,147.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.32 : 5,404.52 = 2,147.96 : x
2. Step 2: Convert to fraction form
   3,916.32/5,404.52 = 2,147.96/x
3. Step 3: Cross multiply
   3,916.32x = 5,404.52 × 2,147.96
4. Step 4: Simplify right side
   3,916.32x = 11,608,692.78
5. Step 5: Solve for x
   x = 11,608,692.78/3,916.32
6. Step 6: Final answer
   x = 2,964.18