Finding the Fourth Proportional to 9,173.58, 12,659.50 and 5,194.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,173.58 : 12,659.50 = 5,194.59 : x
2. Step 2: Convert to fraction form
   9,173.58/12,659.50 = 5,194.59/x
3. Step 3: Cross multiply
   9,173.58x = 12,659.50 × 5,194.59
4. Step 4: Simplify right side
   9,173.58x = 65,760,912.11
5. Step 5: Solve for x
   x = 65,760,912.11/9,173.58
6. Step 6: Final answer
   x = 7,168.51