Finding the Fourth Proportional to 23,071, 31,837.98 and 13,136.92

Step by Step Solution

1. Step 1: Write the proportion equation
   23,071 : 31,837.98 = 13,136.92 : x
2. Step 2: Convert to fraction form
   23,071/31,837.98 = 13,136.92/x
3. Step 3: Cross multiply
   23,071x = 31,837.98 × 13,136.92
4. Step 4: Simplify right side
   23,071x = 418,252,996.22
5. Step 5: Solve for x
   x = 418,252,996.22/23,071
6. Step 6: Final answer
   x = 18,128.95