Finding the Fourth Proportional to 16,678.99, 25,018.79 and 5,583.61

Step by Step Solution

1. Step 1: Write the proportion equation
   16,678.99 : 25,018.79 = 5,583.61 : x
2. Step 2: Convert to fraction form
   16,678.99/25,018.79 = 5,583.61/x
3. Step 3: Cross multiply
   16,678.99x = 25,018.79 × 5,583.61
4. Step 4: Simplify right side
   16,678.99x = 139,695,166.03
5. Step 5: Solve for x
   x = 139,695,166.03/16,678.99
6. Step 6: Final answer
   x = 8,375.52