Finding the Fourth Proportional to 9,290.96, 12,823.28 and 7,048.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290.96 : 12,823.28 = 7,048.88 : x
2. Step 2: Convert to fraction form
   9,290.96/12,823.28 = 7,048.88/x
3. Step 3: Cross multiply
   9,290.96x = 12,823.28 × 7,048.88
4. Step 4: Simplify right side
   9,290.96x = 90,389,761.93
5. Step 5: Solve for x
   x = 90,389,761.93/9,290.96
6. Step 6: Final answer
   x = 9,728.79