Finding the Fourth Proportional to 6,222.67, 8,587.61 and 3,428.17

Step by Step Solution

1. Step 1: Write the proportion equation
   6,222.67 : 8,587.61 = 3,428.17 : x
2. Step 2: Convert to fraction form
   6,222.67/8,587.61 = 3,428.17/x
3. Step 3: Cross multiply
   6,222.67x = 8,587.61 × 3,428.17
4. Step 4: Simplify right side
   6,222.67x = 29,439,769.83
5. Step 5: Solve for x
   x = 29,439,769.83/6,222.67
6. Step 6: Final answer
   x = 4,731.05