Finding the Fourth Proportional to 25,108.93, 34,649.16 and 13,778.15

Step by Step Solution

1. Step 1: Write the proportion equation
   25,108.93 : 34,649.16 = 13,778.15 : x
2. Step 2: Convert to fraction form
   25,108.93/34,649.16 = 13,778.15/x
3. Step 3: Cross multiply
   25,108.93x = 34,649.16 × 13,778.15
4. Step 4: Simplify right side
   25,108.93x = 477,401,150.61
5. Step 5: Solve for x
   x = 477,401,150.61/25,108.93
6. Step 6: Final answer
   x = 19,013.20