Finding the Fourth Proportional to 11,981.10, 17,971.76 and 4,189.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,981.10 : 17,971.76 = 4,189.94 : x
2. Step 2: Convert to fraction form
   11,981.10/17,971.76 = 4,189.94/x
3. Step 3: Cross multiply
   11,981.10x = 17,971.76 × 4,189.94
4. Step 4: Simplify right side
   11,981.10x = 75,300,596.09
5. Step 5: Solve for x
   x = 75,300,596.09/11,981.10
6. Step 6: Final answer
   x = 6,284.95