Finding the Fourth Proportional to 22,678.62, 31,296.72 and 12,607.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,678.62 : 31,296.72 = 12,607.48 : x
2. Step 2: Convert to fraction form
   22,678.62/31,296.72 = 12,607.48/x
3. Step 3: Cross multiply
   22,678.62x = 31,296.72 × 12,607.48
4. Step 4: Simplify right side
   22,678.62x = 394,572,771.47
5. Step 5: Solve for x
   x = 394,572,771.47/22,678.62
6. Step 6: Final answer
   x = 17,398.45