Finding the Fourth Proportional to 10,731.68, 16,100.64 and 3,806.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,731.68 : 16,100.64 = 3,806.72 : x
2. Step 2: Convert to fraction form
   10,731.68/16,100.64 = 3,806.72/x
3. Step 3: Cross multiply
   10,731.68x = 16,100.64 × 3,806.72
4. Step 4: Simplify right side
   10,731.68x = 61,290,628.30
5. Step 5: Solve for x
   x = 61,290,628.30/10,731.68
6. Step 6: Final answer
   x = 5,711.19