Finding the Fourth Proportional to 22,310.52, 30,787.36 and 12,878.52

Step by Step Solution

1. Step 1: Write the proportion equation
   22,310.52 : 30,787.36 = 12,878.52 : x
2. Step 2: Convert to fraction form
   22,310.52/30,787.36 = 12,878.52/x
3. Step 3: Cross multiply
   22,310.52x = 30,787.36 × 12,878.52
4. Step 4: Simplify right side
   22,310.52x = 396,495,631.51
5. Step 5: Solve for x
   x = 396,495,631.51/22,310.52
6. Step 6: Final answer
   x = 17,771.69