Finding the Fourth Proportional to 39,976.87, 55,168.14 and 22,071.89

Step by Step Solution

1. Step 1: Write the proportion equation
   39,976.87 : 55,168.14 = 22,071.89 : x
2. Step 2: Convert to fraction form
   39,976.87/55,168.14 = 22,071.89/x
3. Step 3: Cross multiply
   39,976.87x = 55,168.14 × 22,071.89
4. Step 4: Simplify right side
   39,976.87x = 1,217,665,117.58
5. Step 5: Solve for x
   x = 1,217,665,117.58/39,976.87
6. Step 6: Final answer
   x = 30,459.24