Finding the Fourth Proportional to 23,051.52, 31,809.18 and 12,976.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,051.52 : 31,809.18 = 12,976.72 : x
2. Step 2: Convert to fraction form
   23,051.52/31,809.18 = 12,976.72/x
3. Step 3: Cross multiply
   23,051.52x = 31,809.18 × 12,976.72
4. Step 4: Simplify right side
   23,051.52x = 412,778,822.29
5. Step 5: Solve for x
   x = 412,778,822.29/23,051.52
6. Step 6: Final answer
   x = 17,906.79