Finding the Fourth Proportional to 16,671.88, 25,005.46 and 5,578.32

Step by Step Solution

1. Step 1: Write the proportion equation
   16,671.88 : 25,005.46 = 5,578.32 : x
2. Step 2: Convert to fraction form
   16,671.88/25,005.46 = 5,578.32/x
3. Step 3: Cross multiply
   16,671.88x = 25,005.46 × 5,578.32
4. Step 4: Simplify right side
   16,671.88x = 139,488,457.63
5. Step 5: Solve for x
   x = 139,488,457.63/16,671.88
6. Step 6: Final answer
   x = 8,366.69