Finding the Fourth Proportional to 23,005.20, 31,746.87 and 12,796.16

Step by Step Solution

1. Step 1: Write the proportion equation
   23,005.20 : 31,746.87 = 12,796.16 : x
2. Step 2: Convert to fraction form
   23,005.20/31,746.87 = 12,796.16/x
3. Step 3: Cross multiply
   23,005.20x = 31,746.87 × 12,796.16
4. Step 4: Simplify right side
   23,005.20x = 406,237,884.67
5. Step 5: Solve for x
   x = 406,237,884.67/23,005.20
6. Step 6: Final answer
   x = 17,658.53