Finding the Fourth Proportional to 3,916.55, 5,404.98 and 2,148.29

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.55 : 5,404.98 = 2,148.29 : x
2. Step 2: Convert to fraction form
   3,916.55/5,404.98 = 2,148.29/x
3. Step 3: Cross multiply
   3,916.55x = 5,404.98 × 2,148.29
4. Step 4: Simplify right side
   3,916.55x = 11,611,426.72
5. Step 5: Solve for x
   x = 11,611,426.72/3,916.55
6. Step 6: Final answer
   x = 2,964.71