Finding the Fourth Proportional to 12,008.08, 18,004.42 and 4,992.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,008.08 : 18,004.42 = 4,992.96 : x
2. Step 2: Convert to fraction form
   12,008.08/18,004.42 = 4,992.96/x
3. Step 3: Cross multiply
   12,008.08x = 18,004.42 × 4,992.96
4. Step 4: Simplify right side
   12,008.08x = 89,895,348.88
5. Step 5: Solve for x
   x = 89,895,348.88/12,008.08
6. Step 6: Final answer
   x = 7,486.24