Finding the Fourth Proportional to 17,131.68, 23,655.12 and 13,146.48

Step by Step Solution

1. Step 1: Write the proportion equation
   17,131.68 : 23,655.12 = 13,146.48 : x
2. Step 2: Convert to fraction form
   17,131.68/23,655.12 = 13,146.48/x
3. Step 3: Cross multiply
   17,131.68x = 23,655.12 × 13,146.48
4. Step 4: Simplify right side
   17,131.68x = 310,981,561.98
5. Step 5: Solve for x
   x = 310,981,561.98/17,131.68
6. Step 6: Final answer
   x = 18,152.43