Finding the Fourth Proportional to 10,904.40, 16,346.72 and 3,974

Step by Step Solution

1. Step 1: Write the proportion equation
   10,904.40 : 16,346.72 = 3,974 : x
2. Step 2: Convert to fraction form
   10,904.40/16,346.72 = 3,974/x
3. Step 3: Cross multiply
   10,904.40x = 16,346.72 × 3,974
4. Step 4: Simplify right side
   10,904.40x = 64,961,865.28
5. Step 5: Solve for x
   x = 64,961,865.28/10,904.40
6. Step 6: Final answer
   x = 5,957.40