Finding the Fourth Proportional to 9,247.50, 12,761.73 and 5,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,247.50 : 12,761.73 = 5,521.50 : x
2. Step 2: Convert to fraction form
   9,247.50/12,761.73 = 5,521.50/x
3. Step 3: Cross multiply
   9,247.50x = 12,761.73 × 5,521.50
4. Step 4: Simplify right side
   9,247.50x = 70,463,892.20
5. Step 5: Solve for x
   x = 70,463,892.20/9,247.50
6. Step 6: Final answer
   x = 7,619.78