Finding the Fourth Proportional to 16,111.80, 22,232.70 and 12,763.08

Step by Step Solution

1. Step 1: Write the proportion equation
   16,111.80 : 22,232.70 = 12,763.08 : x
2. Step 2: Convert to fraction form
   16,111.80/22,232.70 = 12,763.08/x
3. Step 3: Cross multiply
   16,111.80x = 22,232.70 × 12,763.08
4. Step 4: Simplify right side
   16,111.80x = 283,757,728.72
5. Step 5: Solve for x
   x = 283,757,728.72/16,111.80
6. Step 6: Final answer
   x = 17,611.80