Finding the Fourth Proportional to 16,870.58, 25,305.90 and 5,183.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,870.58 : 25,305.90 = 5,183.72 : x
2. Step 2: Convert to fraction form
   16,870.58/25,305.90 = 5,183.72/x
3. Step 3: Cross multiply
   16,870.58x = 25,305.90 × 5,183.72
4. Step 4: Simplify right side
   16,870.58x = 131,178,699.95
5. Step 5: Solve for x
   x = 131,178,699.95/16,870.58
6. Step 6: Final answer
   x = 7,775.59