Finding the Fourth Proportional to 9,515.61, 14,274.78 and 2,942.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,515.61 : 14,274.78 = 2,942.31 : x
2. Step 2: Convert to fraction form
   9,515.61/14,274.78 = 2,942.31/x
3. Step 3: Cross multiply
   9,515.61x = 14,274.78 × 2,942.31
4. Step 4: Simplify right side
   9,515.61x = 42,000,827.94
5. Step 5: Solve for x
   x = 42,000,827.94/9,515.61
6. Step 6: Final answer
   x = 4,413.89