Finding the Fourth Proportional to 12,170.91, 16,793.01 and 7,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,170.91 : 16,793.01 = 7,390.72 : x
2. Step 2: Convert to fraction form
   12,170.91/16,793.01 = 7,390.72/x
3. Step 3: Cross multiply
   12,170.91x = 16,793.01 × 7,390.72
4. Step 4: Simplify right side
   12,170.91x = 124,112,504.50
5. Step 5: Solve for x
   x = 124,112,504.50/12,170.91
6. Step 6: Final answer
   x = 10,197.47