Finding the Fourth Proportional to 21,760.93, 30,024.70 and 12,807.73

Step by Step Solution

1. Step 1: Write the proportion equation
   21,760.93 : 30,024.70 = 12,807.73 : x
2. Step 2: Convert to fraction form
   21,760.93/30,024.70 = 12,807.73/x
3. Step 3: Cross multiply
   21,760.93x = 30,024.70 × 12,807.73
4. Step 4: Simplify right side
   21,760.93x = 384,548,250.93
5. Step 5: Solve for x
   x = 384,548,250.93/21,760.93
6. Step 6: Final answer
   x = 17,671.50