Finding the Fourth Proportional to 16,903.76, 25,355.76 and 5,216.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,903.76 : 25,355.76 = 5,216.72 : x
2. Step 2: Convert to fraction form
   16,903.76/25,355.76 = 5,216.72/x
3. Step 3: Cross multiply
   16,903.76x = 25,355.76 × 5,216.72
4. Step 4: Simplify right side
   16,903.76x = 132,273,900.31
5. Step 5: Solve for x
   x = 132,273,900.31/16,903.76
6. Step 6: Final answer
   x = 7,825.12