Finding the Fourth Proportional to 9,128.64, 12,597.50 and 4,936.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.64 : 12,597.50 = 4,936.89 : x
2. Step 2: Convert to fraction form
   9,128.64/12,597.50 = 4,936.89/x
3. Step 3: Cross multiply
   9,128.64x = 12,597.50 × 4,936.89
4. Step 4: Simplify right side
   9,128.64x = 62,192,447.09
5. Step 5: Solve for x
   x = 62,192,447.09/9,128.64
6. Step 6: Final answer
   x = 6,812.89