Finding the Fourth Proportional to 10,981.20, 16,459.98 and 4,744.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,981.20 : 16,459.98 = 4,744.14 : x
2. Step 2: Convert to fraction form
   10,981.20/16,459.98 = 4,744.14/x
3. Step 3: Cross multiply
   10,981.20x = 16,459.98 × 4,744.14
4. Step 4: Simplify right side
   10,981.20x = 78,088,449.52
5. Step 5: Solve for x
   x = 78,088,449.52/10,981.20
6. Step 6: Final answer
   x = 7,111.10