Finding the Fourth Proportional to 11,121.31, 16,665.34 and 10,301.19

Step by Step Solution

1. Step 1: Write the proportion equation
   11,121.31 : 16,665.34 = 10,301.19 : x
2. Step 2: Convert to fraction form
   11,121.31/16,665.34 = 10,301.19/x
3. Step 3: Cross multiply
   11,121.31x = 16,665.34 × 10,301.19
4. Step 4: Simplify right side
   11,121.31x = 171,672,833.75
5. Step 5: Solve for x
   x = 171,672,833.75/11,121.31
6. Step 6: Final answer
   x = 15,436.39