Finding the Fourth Proportional to 22,408.52, 30,921.95 and 12,977.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,408.52 : 30,921.95 = 12,977.69 : x
2. Step 2: Convert to fraction form
   22,408.52/30,921.95 = 12,977.69/x
3. Step 3: Cross multiply
   22,408.52x = 30,921.95 × 12,977.69
4. Step 4: Simplify right side
   22,408.52x = 401,295,359.13
5. Step 5: Solve for x
   x = 401,295,359.13/22,408.52
6. Step 6: Final answer
   x = 17,908.16