Finding the Fourth Proportional to 10,711.61, 16,066.94 and 2,920.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,711.61 : 16,066.94 = 2,920.42 : x
2. Step 2: Convert to fraction form
   10,711.61/16,066.94 = 2,920.42/x
3. Step 3: Cross multiply
   10,711.61x = 16,066.94 × 2,920.42
4. Step 4: Simplify right side
   10,711.61x = 46,922,212.91
5. Step 5: Solve for x
   x = 46,922,212.91/10,711.61
6. Step 6: Final answer
   x = 4,380.50