Finding the Fourth Proportional to 10,791.63, 16,188.66 and 3,394.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,791.63 : 16,188.66 = 3,394.10 : x
2. Step 2: Convert to fraction form
   10,791.63/16,188.66 = 3,394.10/x
3. Step 3: Cross multiply
   10,791.63x = 16,188.66 × 3,394.10
4. Step 4: Simplify right side
   10,791.63x = 54,945,971.38
5. Step 5: Solve for x
   x = 54,945,971.38/10,791.63
6. Step 6: Final answer
   x = 5,091.54