Finding the Fourth Proportional to 11,989.38, 17,892.51 and 10,677.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,989.38 : 17,892.51 = 10,677.18 : x
2. Step 2: Convert to fraction form
   11,989.38/17,892.51 = 10,677.18/x
3. Step 3: Cross multiply
   11,989.38x = 17,892.51 × 10,677.18
4. Step 4: Simplify right side
   11,989.38x = 191,041,549.92
5. Step 5: Solve for x
   x = 191,041,549.92/11,989.38
6. Step 6: Final answer
   x = 15,934.23