Finding the Fourth Proportional to 12,384.99, 18,576.54 and 3,499.97

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384.99 : 18,576.54 = 3,499.97 : x
2. Step 2: Convert to fraction form
   12,384.99/18,576.54 = 3,499.97/x
3. Step 3: Cross multiply
   12,384.99x = 18,576.54 × 3,499.97
4. Step 4: Simplify right side
   12,384.99x = 65,017,239.82
5. Step 5: Solve for x
   x = 65,017,239.82/12,384.99
6. Step 6: Final answer
   x = 5,249.68