Finding the Fourth Proportional to 39,960.42, 55,142.55 and 22,051.59

Step by Step Solution

1. Step 1: Write the proportion equation
   39,960.42 : 55,142.55 = 22,051.59 : x
2. Step 2: Convert to fraction form
   39,960.42/55,142.55 = 22,051.59/x
3. Step 3: Cross multiply
   39,960.42x = 55,142.55 × 22,051.59
4. Step 4: Simplify right side
   39,960.42x = 1,215,980,904.15
5. Step 5: Solve for x
   x = 1,215,980,904.15/39,960.42
6. Step 6: Final answer
   x = 30,429.63