Finding the Fourth Proportional to 9,128.84, 12,597.80 and 5,150.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.84 : 12,597.80 = 5,150.79 : x
2. Step 2: Convert to fraction form
   9,128.84/12,597.80 = 5,150.79/x
3. Step 3: Cross multiply
   9,128.84x = 12,597.80 × 5,150.79
4. Step 4: Simplify right side
   9,128.84x = 64,888,596.51
5. Step 5: Solve for x
   x = 64,888,596.51/9,128.84
6. Step 6: Final answer
   x = 7,108.09