Finding the Fourth Proportional to 11,981.32, 17,975.01 and 3,661.00

Step by Step Solution

1. Step 1: Write the proportion equation
   11,981.32 : 17,975.01 = 3,661.00 : x
2. Step 2: Convert to fraction form
   11,981.32/17,975.01 = 3,661.00/x
3. Step 3: Cross multiply
   11,981.32x = 17,975.01 × 3,661.00
4. Step 4: Simplify right side
   11,981.32x = 65,806,480.40
5. Step 5: Solve for x
   x = 65,806,480.40/11,981.32
6. Step 6: Final answer
   x = 5,492.42