Finding the Fourth Proportional to 16,507, 22,768.98 and 9,787.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,507 : 22,768.98 = 9,787.72 : x
2. Step 2: Convert to fraction form
   16,507/22,768.98 = 9,787.72/x
3. Step 3: Cross multiply
   16,507x = 22,768.98 × 9,787.72
4. Step 4: Simplify right side
   16,507x = 222,856,400.93
5. Step 5: Solve for x
   x = 222,856,400.93/16,507
6. Step 6: Final answer
   x = 13,500.72