Finding the Fourth Proportional to 21,095.39, 31,627.33 and 12,773.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,095.39 : 31,627.33 = 12,773.39 : x
2. Step 2: Convert to fraction form
   21,095.39/31,627.33 = 12,773.39/x
3. Step 3: Cross multiply
   21,095.39x = 31,627.33 × 12,773.39
4. Step 4: Simplify right side
   21,095.39x = 403,988,030.68
5. Step 5: Solve for x
   x = 403,988,030.68/21,095.39
6. Step 6: Final answer
   x = 19,150.53