Finding the Fourth Proportional to 10,925.12, 16,386.06 and 3,998

Step by Step Solution

1. Step 1: Write the proportion equation
   10,925.12 : 16,386.06 = 3,998 : x
2. Step 2: Convert to fraction form
   10,925.12/16,386.06 = 3,998/x
3. Step 3: Cross multiply
   10,925.12x = 16,386.06 × 3,998
4. Step 4: Simplify right side
   10,925.12x = 65,511,467.88
5. Step 5: Solve for x
   x = 65,511,467.88/10,925.12
6. Step 6: Final answer
   x = 5,996.41