Finding the Fourth Proportional to 11,608.60, 17,406.42 and 3,816.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,608.60 : 17,406.42 = 3,816.76 : x
2. Step 2: Convert to fraction form
   11,608.60/17,406.42 = 3,816.76/x
3. Step 3: Cross multiply
   11,608.60x = 17,406.42 × 3,816.76
4. Step 4: Simplify right side
   11,608.60x = 66,436,127.60
5. Step 5: Solve for x
   x = 66,436,127.60/11,608.60
6. Step 6: Final answer
   x = 5,723.01