Finding the Fourth Proportional to 39,185.72, 58,788.52 and 18,140.94

Step by Step Solution

1. Step 1: Write the proportion equation
   39,185.72 : 58,788.52 = 18,140.94 : x
2. Step 2: Convert to fraction form
   39,185.72/58,788.52 = 18,140.94/x
3. Step 3: Cross multiply
   39,185.72x = 58,788.52 × 18,140.94
4. Step 4: Simplify right side
   39,185.72x = 1,066,479,014.01
5. Step 5: Solve for x
   x = 1,066,479,014.01/39,185.72
6. Step 6: Final answer
   x = 27,216.01