Finding the Fourth Proportional to 10,081, 13,875.06 and 8,878.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081 : 13,875.06 = 8,878.09 : x
2. Step 2: Convert to fraction form
   10,081/13,875.06 = 8,878.09/x
3. Step 3: Cross multiply
   10,081x = 13,875.06 × 8,878.09
4. Step 4: Simplify right side
   10,081x = 123,184,031.44
5. Step 5: Solve for x
   x = 123,184,031.44/10,081
6. Step 6: Final answer
   x = 12,219.43