Finding the Fourth Proportional to 13,316.20, 19,972.52 and 3,956.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,316.20 : 19,972.52 = 3,956.04 : x
2. Step 2: Convert to fraction form
   13,316.20/19,972.52 = 3,956.04/x
3. Step 3: Cross multiply
   13,316.20x = 19,972.52 × 3,956.04
4. Step 4: Simplify right side
   13,316.20x = 79,012,105.33
5. Step 5: Solve for x
   x = 79,012,105.33/13,316.20
6. Step 6: Final answer
   x = 5,933.53