Finding the Fourth Proportional to 25,518.72, 38,090.82 and 23,640

Step by Step Solution

1. Step 1: Write the proportion equation
   25,518.72 : 38,090.82 = 23,640 : x
2. Step 2: Convert to fraction form
   25,518.72/38,090.82 = 23,640/x
3. Step 3: Cross multiply
   25,518.72x = 38,090.82 × 23,640
4. Step 4: Simplify right side
   25,518.72x = 900,466,984.80
5. Step 5: Solve for x
   x = 900,466,984.80/25,518.72
6. Step 6: Final answer
   x = 35,286.53