Finding the Fourth Proportional to 12,016.71, 18,026.38 and 4,997.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,016.71 : 18,026.38 = 4,997.55 : x
2. Step 2: Convert to fraction form
   12,016.71/18,026.38 = 4,997.55/x
3. Step 3: Cross multiply
   12,016.71x = 18,026.38 × 4,997.55
4. Step 4: Simplify right side
   12,016.71x = 90,087,809.21
5. Step 5: Solve for x
   x = 90,087,809.21/12,016.71
6. Step 6: Final answer
   x = 7,496.88