Finding the Fourth Proportional to 9,151.56, 13,721.94 and 2,910.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,151.56 : 13,721.94 = 2,910.42 : x
2. Step 2: Convert to fraction form
   9,151.56/13,721.94 = 2,910.42/x
3. Step 3: Cross multiply
   9,151.56x = 13,721.94 × 2,910.42
4. Step 4: Simplify right side
   9,151.56x = 39,936,608.61
5. Step 5: Solve for x
   x = 39,936,608.61/9,151.56
6. Step 6: Final answer
   x = 4,363.91