Finding the Fourth Proportional to 12,801.83, 17,674.70 and 12,180.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,801.83 : 17,674.70 = 12,180.35 : x
2. Step 2: Convert to fraction form
   12,801.83/17,674.70 = 12,180.35/x
3. Step 3: Cross multiply
   12,801.83x = 17,674.70 × 12,180.35
4. Step 4: Simplify right side
   12,801.83x = 215,284,032.15
5. Step 5: Solve for x
   x = 215,284,032.15/12,801.83
6. Step 6: Final answer
   x = 16,816.66