Finding the Fourth Proportional to 10,488.99, 14,474.96 and 5,709.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,488.99 : 14,474.96 = 5,709.08 : x
2. Step 2: Convert to fraction form
   10,488.99/14,474.96 = 5,709.08/x
3. Step 3: Cross multiply
   10,488.99x = 14,474.96 × 5,709.08
4. Step 4: Simplify right side
   10,488.99x = 82,638,676.09
5. Step 5: Solve for x
   x = 82,638,676.09/10,488.99
6. Step 6: Final answer
   x = 7,878.61