Finding the Fourth Proportional to 6,428.18, 8,870.55 and 3,633.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,428.18 : 8,870.55 = 3,633.50 : x
2. Step 2: Convert to fraction form
   6,428.18/8,870.55 = 3,633.50/x
3. Step 3: Cross multiply
   6,428.18x = 8,870.55 × 3,633.50
4. Step 4: Simplify right side
   6,428.18x = 32,231,143.43
5. Step 5: Solve for x
   x = 32,231,143.43/6,428.18
6. Step 6: Final answer
   x = 5,014.04