Finding the Fourth Proportional to 39,150.18, 58,698.89 and 18,078.60

Step by Step Solution

1. Step 1: Write the proportion equation
   39,150.18 : 58,698.89 = 18,078.60 : x
2. Step 2: Convert to fraction form
   39,150.18/58,698.89 = 18,078.60/x
3. Step 3: Cross multiply
   39,150.18x = 58,698.89 × 18,078.60
4. Step 4: Simplify right side
   39,150.18x = 1,061,193,886.88
5. Step 5: Solve for x
   x = 1,061,193,886.88/39,150.18
6. Step 6: Final answer
   x = 27,105.72