Finding the Fourth Proportional to 12,212.06, 16,849.70 and 7,175.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,212.06 : 16,849.70 = 7,175.89 : x
2. Step 2: Convert to fraction form
   12,212.06/16,849.70 = 7,175.89/x
3. Step 3: Cross multiply
   12,212.06x = 16,849.70 × 7,175.89
4. Step 4: Simplify right side
   12,212.06x = 120,911,509.48
5. Step 5: Solve for x
   x = 120,911,509.48/12,212.06
6. Step 6: Final answer
   x = 9,900.99