Finding the Fourth Proportional to 8,207.50, 12,300.98 and 3,521.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,207.50 : 12,300.98 = 3,521.98 : x
2. Step 2: Convert to fraction form
   8,207.50/12,300.98 = 3,521.98/x
3. Step 3: Cross multiply
   8,207.50x = 12,300.98 × 3,521.98
4. Step 4: Simplify right side
   8,207.50x = 43,323,805.54
5. Step 5: Solve for x
   x = 43,323,805.54/8,207.50
6. Step 6: Final answer
   x = 5,278.56