Finding the Fourth Proportional to 21,947.49, 30,287.45 and 11,875.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,947.49 : 30,287.45 = 11,875.98 : x
2. Step 2: Convert to fraction form
   21,947.49/30,287.45 = 11,875.98/x
3. Step 3: Cross multiply
   21,947.49x = 30,287.45 × 11,875.98
4. Step 4: Simplify right side
   21,947.49x = 359,693,293.72
5. Step 5: Solve for x
   x = 359,693,293.72/21,947.49
6. Step 6: Final answer
   x = 16,388.81