Finding the Fourth Proportional to 17,651.69, 26,481.18 and 5,172.12

Step by Step Solution

1. Step 1: Write the proportion equation
   17,651.69 : 26,481.18 = 5,172.12 : x
2. Step 2: Convert to fraction form
   17,651.69/26,481.18 = 5,172.12/x
3. Step 3: Cross multiply
   17,651.69x = 26,481.18 × 5,172.12
4. Step 4: Simplify right side
   17,651.69x = 136,963,831.00
5. Step 5: Solve for x
   x = 136,963,831.00/17,651.69
6. Step 6: Final answer
   x = 7,759.25