Finding the Fourth Proportional to 39,866, 55,015.12 and 23,108.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,866 : 55,015.12 = 23,108.72 : x
2. Step 2: Convert to fraction form
   39,866/55,015.12 = 23,108.72/x
3. Step 3: Cross multiply
   39,866x = 55,015.12 × 23,108.72
4. Step 4: Simplify right side
   39,866x = 1,271,329,003.85
5. Step 5: Solve for x
   x = 1,271,329,003.85/39,866
6. Step 6: Final answer
   x = 31,890.06