Finding the Fourth Proportional to 22,383.06, 30,889.32 and 12,312.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,383.06 : 30,889.32 = 12,312.56 : x
2. Step 2: Convert to fraction form
   22,383.06/30,889.32 = 12,312.56/x
3. Step 3: Cross multiply
   22,383.06x = 30,889.32 × 12,312.56
4. Step 4: Simplify right side
   22,383.06x = 380,326,605.86
5. Step 5: Solve for x
   x = 380,326,605.86/22,383.06
6. Step 6: Final answer
   x = 16,991.72