Finding the Fourth Proportional to 12,213.77, 16,870.82 and 9,033.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,213.77 : 16,870.82 = 9,033.53 : x
2. Step 2: Convert to fraction form
   12,213.77/16,870.82 = 9,033.53/x
3. Step 3: Cross multiply
   12,213.77x = 16,870.82 × 9,033.53
4. Step 4: Simplify right side
   12,213.77x = 152,402,929.07
5. Step 5: Solve for x
   x = 152,402,929.07/12,213.77
6. Step 6: Final answer
   x = 12,477.96