Finding the Fourth Proportional to 16,431.68, 24,640.20 and 4,742.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,431.68 : 24,640.20 = 4,742.12 : x
2. Step 2: Convert to fraction form
   16,431.68/24,640.20 = 4,742.12/x
3. Step 3: Cross multiply
   16,431.68x = 24,640.20 × 4,742.12
4. Step 4: Simplify right side
   16,431.68x = 116,846,785.22
5. Step 5: Solve for x
   x = 116,846,785.22/16,431.68
6. Step 6: Final answer
   x = 7,111.07