Finding the Fourth Proportional to 10,486.27, 15,732.12 and 3,912.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,486.27 : 15,732.12 = 3,912.50 : x
2. Step 2: Convert to fraction form
   10,486.27/15,732.12 = 3,912.50/x
3. Step 3: Cross multiply
   10,486.27x = 15,732.12 × 3,912.50
4. Step 4: Simplify right side
   10,486.27x = 61,551,919.50
5. Step 5: Solve for x
   x = 61,551,919.50/10,486.27
6. Step 6: Final answer
   x = 5,869.77