Finding the Fourth Proportional to 14,978.70, 22,428.45 and 12,003.30

Step by Step Solution

1. Step 1: Write the proportion equation
   14,978.70 : 22,428.45 = 12,003.30 : x
2. Step 2: Convert to fraction form
   14,978.70/22,428.45 = 12,003.30/x
3. Step 3: Cross multiply
   14,978.70x = 22,428.45 × 12,003.30
4. Step 4: Simplify right side
   14,978.70x = 269,215,413.89
5. Step 5: Solve for x
   x = 269,215,413.89/14,978.70
6. Step 6: Final answer
   x = 17,973.22