Finding the Fourth Proportional to 11,212.56, 16,810.56 and 3,815.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,212.56 : 16,810.56 = 3,815.04 : x
2. Step 2: Convert to fraction form
   11,212.56/16,810.56 = 3,815.04/x
3. Step 3: Cross multiply
   11,212.56x = 16,810.56 × 3,815.04
4. Step 4: Simplify right side
   11,212.56x = 64,132,958.82
5. Step 5: Solve for x
   x = 64,132,958.82/11,212.56
6. Step 6: Final answer
   x = 5,719.74