Finding the Fourth Proportional to 22,949.46, 31,670.73 and 12,878.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,949.46 : 31,670.73 = 12,878.63 : x
2. Step 2: Convert to fraction form
   22,949.46/31,670.73 = 12,878.63/x
3. Step 3: Cross multiply
   22,949.46x = 31,670.73 × 12,878.63
4. Step 4: Simplify right side
   22,949.46x = 407,875,613.50
5. Step 5: Solve for x
   x = 407,875,613.50/22,949.46
6. Step 6: Final answer
   x = 17,772.78