Finding the Fourth Proportional to 6,791.61, 10,189.02 and 2,111.40

Step by Step Solution

1. Step 1: Write the proportion equation
   6,791.61 : 10,189.02 = 2,111.40 : x
2. Step 2: Convert to fraction form
   6,791.61/10,189.02 = 2,111.40/x
3. Step 3: Cross multiply
   6,791.61x = 10,189.02 × 2,111.40
4. Step 4: Simplify right side
   6,791.61x = 21,513,096.83
5. Step 5: Solve for x
   x = 21,513,096.83/6,791.61
6. Step 6: Final answer
   x = 3,167.60