Finding the Fourth Proportional to 14,605.50, 20,155.59 and 7,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,605.50 : 20,155.59 = 7,981.50 : x
2. Step 2: Convert to fraction form
   14,605.50/20,155.59 = 7,981.50/x
3. Step 3: Cross multiply
   14,605.50x = 20,155.59 × 7,981.50
4. Step 4: Simplify right side
   14,605.50x = 160,871,841.59
5. Step 5: Solve for x
   x = 160,871,841.59/14,605.50
6. Step 6: Final answer
   x = 11,014.47