Finding the Fourth Proportional to 10,946.68, 16,420.38 and 3,155.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,946.68 : 16,420.38 = 3,155.56 : x
2. Step 2: Convert to fraction form
   10,946.68/16,420.38 = 3,155.56/x
3. Step 3: Cross multiply
   10,946.68x = 16,420.38 × 3,155.56
4. Step 4: Simplify right side
   10,946.68x = 51,815,494.31
5. Step 5: Solve for x
   x = 51,815,494.31/10,946.68
6. Step 6: Final answer
   x = 4,733.44