Finding the Fourth Proportional to 17,128.02, 25,627.43 and 10,111.85

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128.02 : 25,627.43 = 10,111.85 : x
2. Step 2: Convert to fraction form
   17,128.02/25,627.43 = 10,111.85/x
3. Step 3: Cross multiply
   17,128.02x = 25,627.43 × 10,111.85
4. Step 4: Simplify right side
   17,128.02x = 259,140,728.05
5. Step 5: Solve for x
   x = 259,140,728.05/17,128.02
6. Step 6: Final answer
   x = 15,129.64