Finding the Fourth Proportional to 10,980.42, 16,471.20 and 3,189.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,980.42 : 16,471.20 = 3,189.84 : x
2. Step 2: Convert to fraction form
   10,980.42/16,471.20 = 3,189.84/x
3. Step 3: Cross multiply
   10,980.42x = 16,471.20 × 3,189.84
4. Step 4: Simplify right side
   10,980.42x = 52,540,492.61
5. Step 5: Solve for x
   x = 52,540,492.61/10,980.42
6. Step 6: Final answer
   x = 4,784.93