Finding the Fourth Proportional to 11,211.84, 16,819.56 and 3,816.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,211.84 : 16,819.56 = 3,816.72 : x
2. Step 2: Convert to fraction form
   11,211.84/16,819.56 = 3,816.72/x
3. Step 3: Cross multiply
   11,211.84x = 16,819.56 × 3,816.72
4. Step 4: Simplify right side
   11,211.84x = 64,195,551.04
5. Step 5: Solve for x
   x = 64,195,551.04/11,211.84
6. Step 6: Final answer
   x = 5,725.69