Finding the Fourth Proportional to 10,928.84, 16,393.98 and 3,137.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,928.84 : 16,393.98 = 3,137.72 : x
2. Step 2: Convert to fraction form
   10,928.84/16,393.98 = 3,137.72/x
3. Step 3: Cross multiply
   10,928.84x = 16,393.98 × 3,137.72
4. Step 4: Simplify right side
   10,928.84x = 51,439,718.93
5. Step 5: Solve for x
   x = 51,439,718.93/10,928.84
6. Step 6: Final answer
   x = 4,706.79