Finding the Fourth Proportional to 16,770.76, 25,154.69 and 5,677.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,770.76 : 25,154.69 = 5,677.21 : x
2. Step 2: Convert to fraction form
   16,770.76/25,154.69 = 5,677.21/x
3. Step 3: Cross multiply
   16,770.76x = 25,154.69 × 5,677.21
4. Step 4: Simplify right side
   16,770.76x = 142,808,457.61
5. Step 5: Solve for x
   x = 142,808,457.61/16,770.76
6. Step 6: Final answer
   x = 8,515.32