Finding the Fourth Proportional to 9,128.30, 12,584.50 and 5,769.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.30 : 12,584.50 = 5,769.43 : x
2. Step 2: Convert to fraction form
   9,128.30/12,584.50 = 5,769.43/x
3. Step 3: Cross multiply
   9,128.30x = 12,584.50 × 5,769.43
4. Step 4: Simplify right side
   9,128.30x = 72,605,345.95
5. Step 5: Solve for x
   x = 72,605,345.95/9,128.30
6. Step 6: Final answer
   x = 7,953.88