Finding the Fourth Proportional to 11,217.89, 16,828.29 and 3,820.37

Step by Step Solution

1. Step 1: Write the proportion equation
   11,217.89 : 16,828.29 = 3,820.37 : x
2. Step 2: Convert to fraction form
   11,217.89/16,828.29 = 3,820.37/x
3. Step 3: Cross multiply
   11,217.89x = 16,828.29 × 3,820.37
4. Step 4: Simplify right side
   11,217.89x = 64,290,210.13
5. Step 5: Solve for x
   x = 64,290,210.13/11,217.89
6. Step 6: Final answer
   x = 5,731.04