Finding the Fourth Proportional to 10,937.28, 16,401.86 and 4,611.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,937.28 : 16,401.86 = 4,611.72 : x
2. Step 2: Convert to fraction form
   10,937.28/16,401.86 = 4,611.72/x
3. Step 3: Cross multiply
   10,937.28x = 16,401.86 × 4,611.72
4. Step 4: Simplify right side
   10,937.28x = 75,640,785.80
5. Step 5: Solve for x
   x = 75,640,785.80/10,937.28
6. Step 6: Final answer
   x = 6,915.87