Finding the Fourth Proportional to 11,618.94, 17,446.17 and 10,243.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,618.94 : 17,446.17 = 10,243.86 : x
2. Step 2: Convert to fraction form
   11,618.94/17,446.17 = 10,243.86/x
3. Step 3: Cross multiply
   11,618.94x = 17,446.17 × 10,243.86
4. Step 4: Simplify right side
   11,618.94x = 178,716,123.02
5. Step 5: Solve for x
   x = 178,716,123.02/11,618.94
6. Step 6: Final answer
   x = 15,381.45