Finding the Fourth Proportional to 9,268.50, 12,790.62 and 5,542.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,268.50 : 12,790.62 = 5,542.50 : x
2. Step 2: Convert to fraction form
   9,268.50/12,790.62 = 5,542.50/x
3. Step 3: Cross multiply
   9,268.50x = 12,790.62 × 5,542.50
4. Step 4: Simplify right side
   9,268.50x = 70,892,011.35
5. Step 5: Solve for x
   x = 70,892,011.35/9,268.50
6. Step 6: Final answer
   x = 7,648.70