Finding the Fourth Proportional to 45,390.50, 62,638.89 and 25,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,390.50 : 62,638.89 = 25,518.50 : x
2. Step 2: Convert to fraction form
   45,390.50/62,638.89 = 25,518.50/x
3. Step 3: Cross multiply
   45,390.50x = 62,638.89 × 25,518.50
4. Step 4: Simplify right side
   45,390.50x = 1,598,450,514.47
5. Step 5: Solve for x
   x = 1,598,450,514.47/45,390.50
6. Step 6: Final answer
   x = 35,215.53