Finding the Fourth Proportional to 22,464.83, 31,002.89 and 12,907.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,464.83 : 31,002.89 = 12,907.78 : x
2. Step 2: Convert to fraction form
   22,464.83/31,002.89 = 12,907.78/x
3. Step 3: Cross multiply
   22,464.83x = 31,002.89 × 12,907.78
4. Step 4: Simplify right side
   22,464.83x = 400,178,341.44
5. Step 5: Solve for x
   x = 400,178,341.44/22,464.83
6. Step 6: Final answer
   x = 17,813.55