Finding the Fourth Proportional to 21,963.31, 30,288.61 and 14,416.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,963.31 : 30,288.61 = 14,416.18 : x
2. Step 2: Convert to fraction form
   21,963.31/30,288.61 = 14,416.18/x
3. Step 3: Cross multiply
   21,963.31x = 30,288.61 × 14,416.18
4. Step 4: Simplify right side
   21,963.31x = 436,646,053.71
5. Step 5: Solve for x
   x = 436,646,053.71/21,963.31
6. Step 6: Final answer
   x = 19,880.70