Finding the Fourth Proportional to 10,981.50, 16,472.28 and 3,190.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,981.50 : 16,472.28 = 3,190.50 : x
2. Step 2: Convert to fraction form
   10,981.50/16,472.28 = 3,190.50/x
3. Step 3: Cross multiply
   10,981.50x = 16,472.28 × 3,190.50
4. Step 4: Simplify right side
   10,981.50x = 52,554,809.34
5. Step 5: Solve for x
   x = 52,554,809.34/10,981.50
6. Step 6: Final answer
   x = 4,785.76