Finding the Fourth Proportional to 9,304.80, 12,840.67 and 5,055.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,304.80 : 12,840.67 = 5,055.89 : x
2. Step 2: Convert to fraction form
   9,304.80/12,840.67 = 5,055.89/x
3. Step 3: Cross multiply
   9,304.80x = 12,840.67 × 5,055.89
4. Step 4: Simplify right side
   9,304.80x = 64,921,053.47
5. Step 5: Solve for x
   x = 64,921,053.47/9,304.80
6. Step 6: Final answer
   x = 6,977.16