Finding the Fourth Proportional to 10,484.14, 15,729.99 and 5,286.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,484.14 : 15,729.99 = 5,286.10 : x
2. Step 2: Convert to fraction form
   10,484.14/15,729.99 = 5,286.10/x
3. Step 3: Cross multiply
   10,484.14x = 15,729.99 × 5,286.10
4. Step 4: Simplify right side
   10,484.14x = 83,150,300.14
5. Step 5: Solve for x
   x = 83,150,300.14/10,484.14
6. Step 6: Final answer
   x = 7,931.06