Finding the Fourth Proportional to 11,114.52, 16,650.82 and 8,637.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,114.52 : 16,650.82 = 8,637.28 : x
2. Step 2: Convert to fraction form
   11,114.52/16,650.82 = 8,637.28/x
3. Step 3: Cross multiply
   11,114.52x = 16,650.82 × 8,637.28
4. Step 4: Simplify right side
   11,114.52x = 143,817,808.82
5. Step 5: Solve for x
   x = 143,817,808.82/11,114.52
6. Step 6: Final answer
   x = 12,939.64