Finding the Fourth Proportional to 11,981.68, 17,975.16 and 3,662.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,981.68 : 17,975.16 = 3,662.34 : x
2. Step 2: Convert to fraction form
   11,981.68/17,975.16 = 3,662.34/x
3. Step 3: Cross multiply
   11,981.68x = 17,975.16 × 3,662.34
4. Step 4: Simplify right side
   11,981.68x = 65,831,147.47
5. Step 5: Solve for x
   x = 65,831,147.47/11,981.68
6. Step 6: Final answer
   x = 5,494.32