Finding the Fourth Proportional to 11,106.72, 16,674.72 and 10,189.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,106.72 : 16,674.72 = 10,189.80 : x
2. Step 2: Convert to fraction form
   11,106.72/16,674.72 = 10,189.80/x
3. Step 3: Cross multiply
   11,106.72x = 16,674.72 × 10,189.80
4. Step 4: Simplify right side
   11,106.72x = 169,912,061.86
5. Step 5: Solve for x
   x = 169,912,061.86/11,106.72
6. Step 6: Final answer
   x = 15,298.13