Finding the Fourth Proportional to 5,809.61, 8,713.69 and 2,111.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,809.61 : 8,713.69 = 2,111.69 : x
2. Step 2: Convert to fraction form
   5,809.61/8,713.69 = 2,111.69/x
3. Step 3: Cross multiply
   5,809.61x = 8,713.69 × 2,111.69
4. Step 4: Simplify right side
   5,809.61x = 18,400,612.04
5. Step 5: Solve for x
   x = 18,400,612.04/5,809.61
6. Step 6: Final answer
   x = 3,167.27