Finding the Fourth Proportional to 22,950.25, 31,671.05 and 12,878.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,950.25 : 31,671.05 = 12,878.89 : x
2. Step 2: Convert to fraction form
   22,950.25/31,671.05 = 12,878.89/x
3. Step 3: Cross multiply
   22,950.25x = 31,671.05 × 12,878.89
4. Step 4: Simplify right side
   22,950.25x = 407,887,825.56
5. Step 5: Solve for x
   x = 407,887,825.56/22,950.25
6. Step 6: Final answer
   x = 17,772.70