Finding the Fourth Proportional to 11,300.78, 16,951.43 and 2,981.64

Step by Step Solution

1. Step 1: Write the proportion equation
   11,300.78 : 16,951.43 = 2,981.64 : x
2. Step 2: Convert to fraction form
   11,300.78/16,951.43 = 2,981.64/x
3. Step 3: Cross multiply
   11,300.78x = 16,951.43 × 2,981.64
4. Step 4: Simplify right side
   11,300.78x = 50,543,061.75
5. Step 5: Solve for x
   x = 50,543,061.75/11,300.78
6. Step 6: Final answer
   x = 4,472.53