Finding the Fourth Proportional to 11,975.86, 17,920.05 and 7,047.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,975.86 : 17,920.05 = 7,047.82 : x
2. Step 2: Convert to fraction form
   11,975.86/17,920.05 = 7,047.82/x
3. Step 3: Cross multiply
   11,975.86x = 17,920.05 × 7,047.82
4. Step 4: Simplify right side
   11,975.86x = 126,297,286.79
5. Step 5: Solve for x
   x = 126,297,286.79/11,975.86
6. Step 6: Final answer
   x = 10,545.99