Finding the Fourth Proportional to 9,304.80, 12,840.24 and 5,113.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,304.80 : 12,840.24 = 5,113.12 : x
2. Step 2: Convert to fraction form
   9,304.80/12,840.24 = 5,113.12/x
3. Step 3: Cross multiply
   9,304.80x = 12,840.24 × 5,113.12
4. Step 4: Simplify right side
   9,304.80x = 65,653,687.95
5. Step 5: Solve for x
   x = 65,653,687.95/9,304.80
6. Step 6: Final answer
   x = 7,055.89