Finding the Fourth Proportional to 6,426.63, 8,866.14 and 4,187.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,426.63 : 8,866.14 = 4,187.69 : x
2. Step 2: Convert to fraction form
   6,426.63/8,866.14 = 4,187.69/x
3. Step 3: Cross multiply
   6,426.63x = 8,866.14 × 4,187.69
4. Step 4: Simplify right side
   6,426.63x = 37,128,645.82
5. Step 5: Solve for x
   x = 37,128,645.82/6,426.63
6. Step 6: Final answer
   x = 5,777.31