Finding the Fourth Proportional to 22,333.15, 30,819.61 and 12,261.77

Step by Step Solution

1. Step 1: Write the proportion equation
   22,333.15 : 30,819.61 = 12,261.77 : x
2. Step 2: Convert to fraction form
   22,333.15/30,819.61 = 12,261.77/x
3. Step 3: Cross multiply
   22,333.15x = 30,819.61 × 12,261.77
4. Step 4: Simplify right side
   22,333.15x = 377,902,969.31
5. Step 5: Solve for x
   x = 377,902,969.31/22,333.15
6. Step 6: Final answer
   x = 16,921.17