Finding the Fourth Proportional to 39,981.06, 55,174.73 and 22,077.20

Step by Step Solution

1. Step 1: Write the proportion equation
   39,981.06 : 55,174.73 = 22,077.20 : x
2. Step 2: Convert to fraction form
   39,981.06/55,174.73 = 22,077.20/x
3. Step 3: Cross multiply
   39,981.06x = 55,174.73 × 22,077.20
4. Step 4: Simplify right side
   39,981.06x = 1,218,103,576.71
5. Step 5: Solve for x
   x = 1,218,103,576.71/39,981.06
6. Step 6: Final answer
   x = 30,467.02