Finding the Fourth Proportional to 9,128.35, 12,593.76 and 5,988.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.35 : 12,593.76 = 5,988.79 : x
2. Step 2: Convert to fraction form
   9,128.35/12,593.76 = 5,988.79/x
3. Step 3: Cross multiply
   9,128.35x = 12,593.76 × 5,988.79
4. Step 4: Simplify right side
   9,128.35x = 75,421,383.95
5. Step 5: Solve for x
   x = 75,421,383.95/9,128.35
6. Step 6: Final answer
   x = 8,262.32