Finding the Fourth Proportional to 10,522.74, 15,786.86 and 3,949.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,522.74 : 15,786.86 = 3,949.05 : x
2. Step 2: Convert to fraction form
   10,522.74/15,786.86 = 3,949.05/x
3. Step 3: Cross multiply
   10,522.74x = 15,786.86 × 3,949.05
4. Step 4: Simplify right side
   10,522.74x = 62,343,079.74
5. Step 5: Solve for x
   x = 62,343,079.74/10,522.74
6. Step 6: Final answer
   x = 5,924.61