Finding the Fourth Proportional to 25,090.72, 34,623.12 and 13,760

Step by Step Solution

1. Step 1: Write the proportion equation
   25,090.72 : 34,623.12 = 13,760 : x
2. Step 2: Convert to fraction form
   25,090.72/34,623.12 = 13,760/x
3. Step 3: Cross multiply
   25,090.72x = 34,623.12 × 13,760
4. Step 4: Simplify right side
   25,090.72x = 476,414,131.20
5. Step 5: Solve for x
   x = 476,414,131.20/25,090.72
6. Step 6: Final answer
   x = 18,987.66