Finding the Fourth Proportional to 9,230.72, 12,739.96 and 5,454.84

Step by Step Solution

1. Step 1: Write the proportion equation
   9,230.72 : 12,739.96 = 5,454.84 : x
2. Step 2: Convert to fraction form
   9,230.72/12,739.96 = 5,454.84/x
3. Step 3: Cross multiply
   9,230.72x = 12,739.96 × 5,454.84
4. Step 4: Simplify right side
   9,230.72x = 69,494,443.41
5. Step 5: Solve for x
   x = 69,494,443.41/9,230.72
6. Step 6: Final answer
   x = 7,528.60