Finding the Fourth Proportional to 9,175.55, 12,662.28 and 5,398.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,175.55 : 12,662.28 = 5,398.88 : x
2. Step 2: Convert to fraction form
   9,175.55/12,662.28 = 5,398.88/x
3. Step 3: Cross multiply
   9,175.55x = 12,662.28 × 5,398.88
4. Step 4: Simplify right side
   9,175.55x = 68,362,066.94
5. Step 5: Solve for x
   x = 68,362,066.94/9,175.55
6. Step 6: Final answer
   x = 7,450.46