Finding the Fourth Proportional to 25,140.72, 34,707 and 19,462.80

Step by Step Solution

1. Step 1: Write the proportion equation
   25,140.72 : 34,707 = 19,462.80 : x
2. Step 2: Convert to fraction form
   25,140.72/34,707 = 19,462.80/x
3. Step 3: Cross multiply
   25,140.72x = 34,707 × 19,462.80
4. Step 4: Simplify right side
   25,140.72x = 675,495,399.60
5. Step 5: Solve for x
   x = 675,495,399.60/25,140.72
6. Step 6: Final answer
   x = 26,868.58