Finding the Fourth Proportional to 21,892.94, 30,212.29 and 12,461.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,892.94 : 30,212.29 = 12,461.50 : x
2. Step 2: Convert to fraction form
   21,892.94/30,212.29 = 12,461.50/x
3. Step 3: Cross multiply
   21,892.94x = 30,212.29 × 12,461.50
4. Step 4: Simplify right side
   21,892.94x = 376,490,451.84
5. Step 5: Solve for x
   x = 376,490,451.84/21,892.94
6. Step 6: Final answer
   x = 17,196.89