Finding the Fourth Proportional to 9,294.88, 12,822.75 and 5,518.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,294.88 : 12,822.75 = 5,518.20 : x
2. Step 2: Convert to fraction form
   9,294.88/12,822.75 = 5,518.20/x
3. Step 3: Cross multiply
   9,294.88x = 12,822.75 × 5,518.20
4. Step 4: Simplify right side
   9,294.88x = 70,758,499.05
5. Step 5: Solve for x
   x = 70,758,499.05/9,294.88
6. Step 6: Final answer
   x = 7,612.63