Finding the Fourth Proportional to 6,426.42, 8,869.41 and 4,068.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,426.42 : 8,869.41 = 4,068.78 : x
2. Step 2: Convert to fraction form
   6,426.42/8,869.41 = 4,068.78/x
3. Step 3: Cross multiply
   6,426.42x = 8,869.41 × 4,068.78
4. Step 4: Simplify right side
   6,426.42x = 36,087,678.02
5. Step 5: Solve for x
   x = 36,087,678.02/6,426.42
6. Step 6: Final answer
   x = 5,615.52