Finding the Fourth Proportional to 16,128.76, 22,260.10 and 9,844.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,128.76 : 22,260.10 = 9,844.78 : x
2. Step 2: Convert to fraction form
   16,128.76/22,260.10 = 9,844.78/x
3. Step 3: Cross multiply
   16,128.76x = 22,260.10 × 9,844.78
4. Step 4: Simplify right side
   16,128.76x = 219,145,787.28
5. Step 5: Solve for x
   x = 219,145,787.28/16,128.76
6. Step 6: Final answer
   x = 13,587.27