Finding the Fourth Proportional to 12,054.78, 16,637.58 and 8,274.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,054.78 : 16,637.58 = 8,274.83 : x
2. Step 2: Convert to fraction form
   12,054.78/16,637.58 = 8,274.83/x
3. Step 3: Cross multiply
   12,054.78x = 16,637.58 × 8,274.83
4. Step 4: Simplify right side
   12,054.78x = 137,673,146.11
5. Step 5: Solve for x
   x = 137,673,146.11/12,054.78
6. Step 6: Final answer
   x = 11,420.63