Finding the Fourth Proportional to 3,916.07, 5,404.12 and 2,123.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.07 : 5,404.12 = 2,123.52 : x
2. Step 2: Convert to fraction form
   3,916.07/5,404.12 = 2,123.52/x
3. Step 3: Cross multiply
   3,916.07x = 5,404.12 × 2,123.52
4. Step 4: Simplify right side
   3,916.07x = 11,475,731.33
5. Step 5: Solve for x
   x = 11,475,731.33/3,916.07
6. Step 6: Final answer
   x = 2,930.42