Finding the Fourth Proportional to 15,456.27, 21,337.93 and 12,091.94

Step by Step Solution

1. Step 1: Write the proportion equation
   15,456.27 : 21,337.93 = 12,091.94 : x
2. Step 2: Convert to fraction form
   15,456.27/21,337.93 = 12,091.94/x
3. Step 3: Cross multiply
   15,456.27x = 21,337.93 × 12,091.94
4. Step 4: Simplify right side
   15,456.27x = 258,016,969.28
5. Step 5: Solve for x
   x = 258,016,969.28/15,456.27
6. Step 6: Final answer
   x = 16,693.35