Finding the Fourth Proportional to 12,005.12, 16,572.12 and 7,290.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,005.12 : 16,572.12 = 7,290.92 : x
2. Step 2: Convert to fraction form
   12,005.12/16,572.12 = 7,290.92/x
3. Step 3: Cross multiply
   12,005.12x = 16,572.12 × 7,290.92
4. Step 4: Simplify right side
   12,005.12x = 120,826,001.15
5. Step 5: Solve for x
   x = 120,826,001.15/12,005.12
6. Step 6: Final answer
   x = 10,064.54