Finding the Fourth Proportional to 21,892.06, 30,211.28 and 12,460.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,892.06 : 30,211.28 = 12,460.69 : x
2. Step 2: Convert to fraction form
   21,892.06/30,211.28 = 12,460.69/x
3. Step 3: Cross multiply
   21,892.06x = 30,211.28 × 12,460.69
4. Step 4: Simplify right side
   21,892.06x = 376,453,394.58
5. Step 5: Solve for x
   x = 376,453,394.58/21,892.06
6. Step 6: Final answer
   x = 17,195.89