Finding the Fourth Proportional to 10,938.09, 16,404.71 and 3,145.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,938.09 : 16,404.71 = 3,145.08 : x
2. Step 2: Convert to fraction form
   10,938.09/16,404.71 = 3,145.08/x
3. Step 3: Cross multiply
   10,938.09x = 16,404.71 × 3,145.08
4. Step 4: Simplify right side
   10,938.09x = 51,594,109.60
5. Step 5: Solve for x
   x = 51,594,109.60/10,938.09
6. Step 6: Final answer
   x = 4,716.92