Finding the Fourth Proportional to 25,310.72, 34,929.06 and 13,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   25,310.72 : 34,929.06 = 13,980.50 : x
2. Step 2: Convert to fraction form
   25,310.72/34,929.06 = 13,980.50/x
3. Step 3: Cross multiply
   25,310.72x = 34,929.06 × 13,980.50
4. Step 4: Simplify right side
   25,310.72x = 488,325,478.78
5. Step 5: Solve for x
   x = 488,325,478.78/25,310.72
6. Step 6: Final answer
   x = 19,293.23