Finding the Fourth Proportional to 17,128.94, 25,701.10 and 10,887.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128.94 : 25,701.10 = 10,887.34 : x
2. Step 2: Convert to fraction form
   17,128.94/25,701.10 = 10,887.34/x
3. Step 3: Cross multiply
   17,128.94x = 25,701.10 × 10,887.34
4. Step 4: Simplify right side
   17,128.94x = 279,816,614.07
5. Step 5: Solve for x
   x = 279,816,614.07/17,128.94
6. Step 6: Final answer
   x = 16,335.90