Finding the Fourth Proportional to 21,814.89, 30,101.52 and 12,381.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,814.89 : 30,101.52 = 12,381.63 : x
2. Step 2: Convert to fraction form
   21,814.89/30,101.52 = 12,381.63/x
3. Step 3: Cross multiply
   21,814.89x = 30,101.52 × 12,381.63
4. Step 4: Simplify right side
   21,814.89x = 372,705,883.08
5. Step 5: Solve for x
   x = 372,705,883.08/21,814.89
6. Step 6: Final answer
   x = 17,084.93