Finding the Fourth Proportional to 21,787.59, 30,063.33 and 12,359.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,787.59 : 30,063.33 = 12,359.19 : x
2. Step 2: Convert to fraction form
   21,787.59/30,063.33 = 12,359.19/x
3. Step 3: Cross multiply
   21,787.59x = 30,063.33 × 12,359.19
4. Step 4: Simplify right side
   21,787.59x = 371,558,407.50
5. Step 5: Solve for x
   x = 371,558,407.50/21,787.59
6. Step 6: Final answer
   x = 17,053.67