Finding the Fourth Proportional to 10,692.41, 16,111.61 and 8,787.29

Step by Step Solution

1. Step 1: Write the proportion equation
   10,692.41 : 16,111.61 = 8,787.29 : x
2. Step 2: Convert to fraction form
   10,692.41/16,111.61 = 8,787.29/x
3. Step 3: Cross multiply
   10,692.41x = 16,111.61 × 8,787.29
4. Step 4: Simplify right side
   10,692.41x = 141,577,297.89
5. Step 5: Solve for x
   x = 141,577,297.89/10,692.41
6. Step 6: Final answer
   x = 13,240.92