Finding the Fourth Proportional to 9,318.82, 12,862.50 and 5,493.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,318.82 : 12,862.50 = 5,493.80 : x
2. Step 2: Convert to fraction form
   9,318.82/12,862.50 = 5,493.80/x
3. Step 3: Cross multiply
   9,318.82x = 12,862.50 × 5,493.80
4. Step 4: Simplify right side
   9,318.82x = 70,664,002.50
5. Step 5: Solve for x
   x = 70,664,002.50/9,318.82
6. Step 6: Final answer
   x = 7,582.93