Finding the Fourth Proportional to 17,128.89, 25,634.93 and 14,358.69

Step by Step Solution

1. Step 1: Write the proportion equation
   17,128.89 : 25,634.93 = 14,358.69 : x
2. Step 2: Convert to fraction form
   17,128.89/25,634.93 = 14,358.69/x
3. Step 3: Cross multiply
   17,128.89x = 25,634.93 × 14,358.69
4. Step 4: Simplify right side
   17,128.89x = 368,083,941.25
5. Step 5: Solve for x
   x = 368,083,941.25/17,128.89
6. Step 6: Final answer
   x = 21,489.07