Finding the Fourth Proportional to 6,791.50, 10,188.69 and 2,111.39

Step by Step Solution

1. Step 1: Write the proportion equation
   6,791.50 : 10,188.69 = 2,111.39 : x
2. Step 2: Convert to fraction form
   6,791.50/10,188.69 = 2,111.39/x
3. Step 3: Cross multiply
   6,791.50x = 10,188.69 × 2,111.39
4. Step 4: Simplify right side
   6,791.50x = 21,512,298.18
5. Step 5: Solve for x
   x = 21,512,298.18/6,791.50
6. Step 6: Final answer
   x = 3,167.53