Finding the Fourth Proportional to 11,717.25, 17,577.34 and 3,820.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,717.25 : 17,577.34 = 3,820.56 : x
2. Step 2: Convert to fraction form
   11,717.25/17,577.34 = 3,820.56/x
3. Step 3: Cross multiply
   11,717.25x = 17,577.34 × 3,820.56
4. Step 4: Simplify right side
   11,717.25x = 67,155,282.11
5. Step 5: Solve for x
   x = 67,155,282.11/11,717.25
6. Step 6: Final answer
   x = 5,731.32