Finding the Fourth Proportional to 6,426.55, 8,869.59 and 4,068.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,426.55 : 8,869.59 = 4,068.91 : x
2. Step 2: Convert to fraction form
   6,426.55/8,869.59 = 4,068.91/x
3. Step 3: Cross multiply
   6,426.55x = 8,869.59 × 4,068.91
4. Step 4: Simplify right side
   6,426.55x = 36,089,498.75
5. Step 5: Solve for x
   x = 36,089,498.75/6,426.55
6. Step 6: Final answer
   x = 5,615.69