Finding the Fourth Proportional to 6,786.61, 10,179.43 and 2,106.51

Step by Step Solution

1. Step 1: Write the proportion equation
   6,786.61 : 10,179.43 = 2,106.51 : x
2. Step 2: Convert to fraction form
   6,786.61/10,179.43 = 2,106.51/x
3. Step 3: Cross multiply
   6,786.61x = 10,179.43 × 2,106.51
4. Step 4: Simplify right side
   6,786.61x = 21,443,050.91
5. Step 5: Solve for x
   x = 21,443,050.91/6,786.61
6. Step 6: Final answer
   x = 3,159.61