Finding the Fourth Proportional to 22,949.40, 31,670.47 and 12,880.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,949.40 : 31,670.47 = 12,880.02 : x
2. Step 2: Convert to fraction form
   22,949.40/31,670.47 = 12,880.02/x
3. Step 3: Cross multiply
   22,949.40x = 31,670.47 × 12,880.02
4. Step 4: Simplify right side
   22,949.40x = 407,916,096.46
5. Step 5: Solve for x
   x = 407,916,096.46/22,949.40
6. Step 6: Final answer
   x = 17,774.59