Finding the Fourth Proportional to 12,276.05, 18,414.06 and 4,878.51

Step by Step Solution

1. Step 1: Write the proportion equation
   12,276.05 : 18,414.06 = 4,878.51 : x
2. Step 2: Convert to fraction form
   12,276.05/18,414.06 = 4,878.51/x
3. Step 3: Cross multiply
   12,276.05x = 18,414.06 × 4,878.51
4. Step 4: Simplify right side
   12,276.05x = 89,833,175.85
5. Step 5: Solve for x
   x = 89,833,175.85/12,276.05
6. Step 6: Final answer
   x = 7,317.76