Finding the Fourth Proportional to 22,179.15, 30,602.65 and 12,745.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,179.15 : 30,602.65 = 12,745.89 : x
2. Step 2: Convert to fraction form
   22,179.15/30,602.65 = 12,745.89/x
3. Step 3: Cross multiply
   22,179.15x = 30,602.65 × 12,745.89
4. Step 4: Simplify right side
   22,179.15x = 390,058,010.61
5. Step 5: Solve for x
   x = 390,058,010.61/22,179.15
6. Step 6: Final answer
   x = 17,586.70