Finding the Fourth Proportional to 17,130.72, 23,636.70 and 10,055.28

Step by Step Solution

1. Step 1: Write the proportion equation
   17,130.72 : 23,636.70 = 10,055.28 : x
2. Step 2: Convert to fraction form
   17,130.72/23,636.70 = 10,055.28/x
3. Step 3: Cross multiply
   17,130.72x = 23,636.70 × 10,055.28
4. Step 4: Simplify right side
   17,130.72x = 237,673,636.78
5. Step 5: Solve for x
   x = 237,673,636.78/17,130.72
6. Step 6: Final answer
   x = 13,874.12