Finding the Fourth Proportional to 10,722.84, 16,081.38 and 5,174.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722.84 : 16,081.38 = 5,174.76 : x
2. Step 2: Convert to fraction form
   10,722.84/16,081.38 = 5,174.76/x
3. Step 3: Cross multiply
   10,722.84x = 16,081.38 × 5,174.76
4. Step 4: Simplify right side
   10,722.84x = 83,217,281.97
5. Step 5: Solve for x
   x = 83,217,281.97/10,722.84
6. Step 6: Final answer
   x = 7,760.75