Finding the Fourth Proportional to 9,813.25, 13,542.64 and 5,622.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,813.25 : 13,542.64 = 5,622.31 : x
2. Step 2: Convert to fraction form
   9,813.25/13,542.64 = 5,622.31/x
3. Step 3: Cross multiply
   9,813.25x = 13,542.64 × 5,622.31
4. Step 4: Simplify right side
   9,813.25x = 76,140,954.80
5. Step 5: Solve for x
   x = 76,140,954.80/9,813.25
6. Step 6: Final answer
   x = 7,758.99