Finding the Fourth Proportional to 16,900.10, 25,352.55 and 5,212.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,900.10 : 25,352.55 = 5,212.10 : x
2. Step 2: Convert to fraction form
   16,900.10/25,352.55 = 5,212.10/x
3. Step 3: Cross multiply
   16,900.10x = 25,352.55 × 5,212.10
4. Step 4: Simplify right side
   16,900.10x = 132,140,025.86
5. Step 5: Solve for x
   x = 132,140,025.86/16,900.10
6. Step 6: Final answer
   x = 7,818.89