Finding the Fourth Proportional to 10,488.99, 14,475.05 and 5,709.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,488.99 : 14,475.05 = 5,709.18 : x
2. Step 2: Convert to fraction form
   10,488.99/14,475.05 = 5,709.18/x
3. Step 3: Cross multiply
   10,488.99x = 14,475.05 × 5,709.18
4. Step 4: Simplify right side
   10,488.99x = 82,640,745.22
5. Step 5: Solve for x
   x = 82,640,745.22/10,488.99
6. Step 6: Final answer
   x = 7,878.81