Finding the Fourth Proportional to 21,734.63, 30,012.18 and 13,790.95

Step by Step Solution

1. Step 1: Write the proportion equation
   21,734.63 : 30,012.18 = 13,790.95 : x
2. Step 2: Convert to fraction form
   21,734.63/30,012.18 = 13,790.95/x
3. Step 3: Cross multiply
   21,734.63x = 30,012.18 × 13,790.95
4. Step 4: Simplify right side
   21,734.63x = 413,896,404.82
5. Step 5: Solve for x
   x = 413,896,404.82/21,734.63
6. Step 6: Final answer
   x = 19,043.18