Finding the Fourth Proportional to 23,131.69, 31,921.62 and 13,060.03

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131.69 : 31,921.62 = 13,060.03 : x
2. Step 2: Convert to fraction form
   23,131.69/31,921.62 = 13,060.03/x
3. Step 3: Cross multiply
   23,131.69x = 31,921.62 × 13,060.03
4. Step 4: Simplify right side
   23,131.69x = 416,897,314.85
5. Step 5: Solve for x
   x = 416,897,314.85/23,131.69
6. Step 6: Final answer
   x = 18,022.78