Finding the Fourth Proportional to 16,885.21, 25,325.89 and 4,572.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,885.21 : 25,325.89 = 4,572.25 : x
2. Step 2: Convert to fraction form
   16,885.21/25,325.89 = 4,572.25/x
3. Step 3: Cross multiply
   16,885.21x = 25,325.89 × 4,572.25
4. Step 4: Simplify right side
   16,885.21x = 115,796,300.55
5. Step 5: Solve for x
   x = 115,796,300.55/16,885.21
6. Step 6: Final answer
   x = 6,857.85