Finding the Fourth Proportional to 11,189.85, 15,359.42 and 10,708.71

Step by Step Solution

1. Step 1: Write the proportion equation
   11,189.85 : 15,359.42 = 10,708.71 : x
2. Step 2: Convert to fraction form
   11,189.85/15,359.42 = 10,708.71/x
3. Step 3: Cross multiply
   11,189.85x = 15,359.42 × 10,708.71
4. Step 4: Simplify right side
   11,189.85x = 164,479,543.72
5. Step 5: Solve for x
   x = 164,479,543.72/11,189.85
6. Step 6: Final answer
   x = 14,699.00