Finding the Fourth Proportional to 6,222.96, 8,587.88 and 3,428.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,222.96 : 8,587.88 = 3,428.56 : x
2. Step 2: Convert to fraction form
   6,222.96/8,587.88 = 3,428.56/x
3. Step 3: Cross multiply
   6,222.96x = 8,587.88 × 3,428.56
4. Step 4: Simplify right side
   6,222.96x = 29,444,061.85
5. Step 5: Solve for x
   x = 29,444,061.85/6,222.96
6. Step 6: Final answer
   x = 4,731.52