Finding the Fourth Proportional to 22,816.69, 31,487.03 and 12,880.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,816.69 : 31,487.03 = 12,880.69 : x
2. Step 2: Convert to fraction form
   22,816.69/31,487.03 = 12,880.69/x
3. Step 3: Cross multiply
   22,816.69x = 31,487.03 × 12,880.69
4. Step 4: Simplify right side
   22,816.69x = 405,574,577.63
5. Step 5: Solve for x
   x = 405,574,577.63/22,816.69
6. Step 6: Final answer
   x = 17,775.35