Finding the Fourth Proportional to 10,888.40, 16,322.72 and 3,958

Step by Step Solution

1. Step 1: Write the proportion equation
   10,888.40 : 16,322.72 = 3,958 : x
2. Step 2: Convert to fraction form
   10,888.40/16,322.72 = 3,958/x
3. Step 3: Cross multiply
   10,888.40x = 16,322.72 × 3,958
4. Step 4: Simplify right side
   10,888.40x = 64,605,325.76
5. Step 5: Solve for x
   x = 64,605,325.76/10,888.40
6. Step 6: Final answer
   x = 5,933.41