Finding the Fourth Proportional to 39,928.76, 55,101.32 and 22,023.89

Step by Step Solution

1. Step 1: Write the proportion equation
   39,928.76 : 55,101.32 = 22,023.89 : x
2. Step 2: Convert to fraction form
   39,928.76/55,101.32 = 22,023.89/x
3. Step 3: Cross multiply
   39,928.76x = 55,101.32 × 22,023.89
4. Step 4: Simplify right side
   39,928.76x = 1,213,545,410.53
5. Step 5: Solve for x
   x = 1,213,545,410.53/39,928.76
6. Step 6: Final answer
   x = 30,392.76