Finding the Fourth Proportional to 39,187.72, 58,791.52 and 18,142.94

Step by Step Solution

1. Step 1: Write the proportion equation
   39,187.72 : 58,791.52 = 18,142.94 : x
2. Step 2: Convert to fraction form
   39,187.72/58,791.52 = 18,142.94/x
3. Step 3: Cross multiply
   39,187.72x = 58,791.52 × 18,142.94
4. Step 4: Simplify right side
   39,187.72x = 1,066,651,019.87
5. Step 5: Solve for x
   x = 1,066,651,019.87/39,187.72
6. Step 6: Final answer
   x = 27,219.01