Finding the Fourth Proportional to 6,522.50, 9,000.50 and 3,689.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,522.50 : 9,000.50 = 3,689.72 : x
2. Step 2: Convert to fraction form
   6,522.50/9,000.50 = 3,689.72/x
3. Step 3: Cross multiply
   6,522.50x = 9,000.50 × 3,689.72
4. Step 4: Simplify right side
   6,522.50x = 33,209,328.91
5. Step 5: Solve for x
   x = 33,209,328.91/6,522.50
6. Step 6: Final answer
   x = 5,091.51