Finding the Fourth Proportional to 12,886.05, 17,796.78 and 10,376.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,886.05 : 17,796.78 = 10,376.49 : x
2. Step 2: Convert to fraction form
   12,886.05/17,796.78 = 10,376.49/x
3. Step 3: Cross multiply
   12,886.05x = 17,796.78 × 10,376.49
4. Step 4: Simplify right side
   12,886.05x = 184,668,109.70
5. Step 5: Solve for x
   x = 184,668,109.70/12,886.05
6. Step 6: Final answer
   x = 14,330.85