Finding the Fourth Proportional to 39,976.83, 55,168.23 and 22,071.87

Step by Step Solution

1. Step 1: Write the proportion equation
   39,976.83 : 55,168.23 = 22,071.87 : x
2. Step 2: Convert to fraction form
   39,976.83/55,168.23 = 22,071.87/x
3. Step 3: Cross multiply
   39,976.83x = 55,168.23 × 22,071.87
4. Step 4: Simplify right side
   39,976.83x = 1,217,666,000.69
5. Step 5: Solve for x
   x = 1,217,666,000.69/39,976.83
6. Step 6: Final answer
   x = 30,459.29